BRAINVISTA –SOLVED PROBLEMS
   Search Result 1 - 8 Total Brain teasers found 537    
 Brain Teaser No : 00098 Imagine that you have 26 constants, labelled A through Z. Each constant is assigned a value in the following way: A = 1; the rest of the values equal their position in the alphabet (B corresponds to the second position so it equals 2, C = 3, etc.) raised to the power of the preceeding constant value. So, B = 2 ^ (A's value), or B = 2^1 = 2. C = 3^2 = 9. D = 4^9, etc. 
Find the exact numerical value to the following equation: (X - A) * (X - B) * (X - C) * ... * (X - Y) * (X - Z) 
 Brain Teaser No : 00260 If three babies are born every second of the day, then how many babies will be born in the year 2001?
 Brain Teaser No : 00268How many ways are there of arranging the sixteen black or white pieces of a standard international chess set on the first two rows of the board? Given that each pawn is identical and each rook, knight and bishop is identical to its pair.
 Brain Teaser No : 00284 While sitting in a club where all single men tell the truth and all married men lie, a woman is approached by three men. 
She asks the first guy if he is married, but the music is so loud that she can not hear his answer. 
So she turns to the second guy, who tells her, "The first guy said, 'I am married', but he is really single." Then she turns to the third guy, who says, "The second guy is single." 
Can you determine the marital status of each of the three men?
Submitted by : Marie 
Brain Teaser No : 00285   Five executives of a Cultural Committee hold a conference in Mumbai. Mr. A converses in English and Marathi. Mr. B converses in Hindi and English. Mr. C converses in Marathi and Hindi. 
Mr. D converses in Hindi and Gujarati. Mr. E, a native Marathi, can also converse in Gujarati. 
If a sixth executive is brought in, to be understood by the maximum number of the original five, he should be fluent in which 2 languages? 
Brain Teaser No : 00349  In order to conduct the work at store it is necessary to have a minimum of three workers each day. The staff consists of five persons who work on part time basis. Alice can work on Mondays, Wednesdays and Fridays. Betty cannot report for work on Wednesdays. Carol can report for work on Tuesdays and Wednesdays only. Dorothy cannot work on Fridays. Emmy is available anytime except on the first Monday and Thursday of the month. During which day of the week, might it be impossible to conduct the work at store? Note that the store remains close on Sundays. 
 Brain Teaser No : 00669  Anna, her brother - Andre, her daughter - Ami, and her son, Adam are tennis players. As a game of doubles Anna's brother is directly across the net from Ami. Adam is diagonally across the net from the worst player's sibling. The best player and the worst player are on the same side of the net.Who is the best player? 
 Brain Teaser No : 00020 
Multiply by 7 the number of 8's immediately followed by 3, but not by 5, in the number below: 
381654783298514285838385737983256941837408326 
Search Result 9 - 16 Total Brain teasers found 537    
 Brain Teaser No : 00196   Veeru says to Jay, "Can you figure out how many Eggs I have in my bucket?" He gives 3 clues to Jay: If the number of Eggs I have is a multiple of 5, it is a number between 1 and 19 is not a multiple of 8, it is a number between 20 and 29 is not a multiple of 10, it is a number between 30 and 39How many Eggs does Veeru have in his bucket? 
 Brain Teaser No : 00246     You live in a hilly section of the suburbs and want to buy a new set of table and chairs for the garden. Would you be better off buying items of furniture that have four legs or three legs? And why? 
 Brain Teaser No : 00720 Two people enter a race in whick you run to a point and back. Person A runs 20 mph to and from the point. Person B runs to the point going 10 mph and 30 mph going back. Who came in first?
 Brain Teaser No : 00034    My friend collects antique stamps. She purchased two, but found that she needed to raise money urgently. So she sold them for Rs. 8000 each. On one she made 20% and on the other she lost 20%. How much did she gain or lose in the entire transaction? 
 Brain Teaser No : 00091
Father's age is three years more than three times the son's age. After three years, father's age will be ten years more than twice the son's age. What is the father's present age? 
 Brain Teaser No : 00177 "Santa Express" is one kilometer long and always travels at the speed of 60 kilometers per hour. It passes through a tunnel which is one kilometer long. How long the Express will take to pass completely through the tunnel? 
Brain Teaser No : 00198 Once a week a wagon driver leaves his hut and drives his wagon to the river dock to pick up supplies for his town. At 4:05 PM, one-fifth of the way to the dock, he passes the Temple. At 4:15 PM, one-third of the way, he passes the Preetam-Da-Dhabaa. At what time does he reached the dock? 
 Brain Teaser No : 00414    Sarika multiplied 414 by certain number and obtained 69958 as the answer. But she found that there is some error in the answer - both the 9s in the answer are wrong and all the other digits are correct. Can you find the correct answer? 
    Search Result 17 - 24 Total Brain teasers found 537    
 Brain Teaser No : 00548
There is a two digit number, the second digit of which is 4 less than its first digit. Also, the number is divisible by the sum of its digits and if you do so, the quotient would be 7. Find the number. 
 Brain Teaser No : 00856   Find the least number which when divided by 35, leaves remainder 25; when divided by 45, leaves remainder 35 and when divided by 55, leaves remainder 45. 
Brain Teaser No : 00024     A person wanted to withdraw X rupees and Y paise from the bank. But cashier made a mistake and gave him Y rupees and X paise. Neither the person nor the cashier noticed that. After spending 20 paise, the person counts the money. And to his surprise, he has double the amount he wanted to withdraw. Find X and Y. (1 Rupee = 100 Paise) 
 Brain Teaser No : 00283
There is a blind man, a deaf man, and a man with no arms. Something falls from the sky, the blind man sees it, the deaf man hears it and the man with no arms picks it up and puts it in his pocket. What is it?
 Brain Teaser No : 00290    Two men go into a restraunt and both have a glass of ice cold coke. The glasses both had the EXACT same contents. There was poison in the glasses. One man drank his coke fast and lived. The other man drank his slow and died. Why?
 Brain Teaser No : 00363  An untiring servant it is, carrying loads across muddy earth. But one thing that can't be forced, is a return to the place of its birth. What it is? 
 Brain Teaser No : 00401   There is a cabin on the top of a mountin. There are many people dead inside. They are the only once-living creatures in the cabin. All of the windows and doors are sealed, and there is no human life around for hundreds of miles. There is no way to reach the cabin by car or foot, there are dense woods and dangerous wild animals in the area. How did they get there?
 Brain Teaser No : 00614 Place the numbers from 1 to 15 in the blocks below, without repeating any of them, such a way that the sum of the numbers in any two adjacent blocks is always a perfect square.
     [] [] [] [] [] [] [] [] [] [] [] [] [] [] []   A whole number is said to be a perfect square if it is equal to some whole number multiplied by itself. e.g. 36 (6*6), 121 (11*11)
   Search Result 25 - 32 Total Brain teasers found 537    
 Brain Teaser No : 00185  Two trains starting at same time, one from Bangalore to Mysore and other in opposite direction arrive at their destination 1hr and 4hrs respectively after passing each other. How much faster is one train from other? 
 Brain Teaser No : 00224
Mrs. Kovarik made twenty four Sandwiches. All but seven were eaten. How many were left?
 Brain Teaser No : 00347
At the entrance to a members club stands a stranger seeking admission. A friend told him that it's easy to get in. You just have to answer a question corrcetly! Answering wrong, however, will result in being shot! To live a little longer, the man waits in a back alley near the entrance for people to go in. After a while a man comes to the entrance. The door warden asks him: "Twelve?" to which he replies "Six!" and goes in. "That's easy." our friend thinks, but he waits a little longer.   Another man comes to the door. "Six?" the door warden asks, to which he replies "Three!" and goes in."That's too good to be true" our friend thinks, and he was right. Because, when asked "Four?", he answered "Two!" and was found dead in the alley. What was the correct answer?
Brain Teaser No : 00635
        A  B  C
              D
              E  F  G
                    H
                    I
Each of the digits from 1 to 9 is represented by a different letter above. Also, A + B + C = C + D + E = E + F + G = G + H + I = 13 Which digit does E represent? 
 Brain Teaser No : 00844
Scientist decided to do a study on the population growth of rabbits. Inside a controlled environment, 1000 rabbits were placed. Six months later, there were 1000Z rabbits. At the beginning of the 3rd year, there were roughly 2828Z rabbits, which was 4 times what the scientists placed in there at the beginning of the 1st year. If Z is a positive variable, how many rabbits would be there at the beginning of the 11th year?
Brain Teaser No : 00351     If 6 x 4 = 12        8 x 6 = 32          11 x 8 = 66     then 10 x 10 = ??
 Brain Teaser No : 00354  Here is the 7 step proof which says 2=1. 
a and b are non-zero integers.
1.                  a = b
2.                a*a = a*b
3.          a*a - b*b = a*b - b*b
4.  (a + b) * (a - b) = b * (a - b)
5.              a + b = b
6.                2*b = b
7.                  2 = 1
Is it Correct? If not, then what is wrong with the proof? 
Brain Teaser No : 00497
If it is snowing at midnight, what is the possibility that it will be sunny in the same place 72 hours later?
Search Result 33 - 40 Total Brain teasers found 537    
 Brain Teaser No : 00178   Vipul was studying for his examinations and the lights went off. It was around 1:00 AM. He lighted two uniform candles of equal length but one thicker than the other. The thick candle is supposed to last six hours and the thin one two hours less. When he finally went to sleep, the thick candle was twice as long as the thin one. For how long did Vipul study in candle light? 
 Brain Teaser No : 00190  We have to fill number from 1 to 12 at the intersection point of two or more lines. We have to construct a star using two triangle. The sum of all number lying in straight lines should be same. This can be easilty understood by the fig. and hence solved.
Brain Teaser No : 00208   What are the next two numbers in the given series?  5, 6, 5, 6, 5, 5, 7, 6, ?, ? 
 Brain Teaser No : 00253 SkyFi city is served by 6 subway lines - A, E, I, O, U and Z. When it snows, morning service on line E is delayed. When it rains or snows, service on the lines A, U and Z is delayed both morning and afternoon. When the temperature drops below 20 C, afternoon service is cancelled on either line A or line O, but not both.When the temperature rises above 40 C, afternoon service is cancelled on either line I or line Z, but not both.When service on line A is delayed or cancelled, service on line I is also delayed. When service on line Z is delayed or cancelled, service on line E is also delayed.On February 10, it snows all day with the temperature at 18C. On how many lines service will be delayed or cancelled, including both morning and afternoon?  Brain Teaser No : 00277
In Laloo's family, each son has the same number of sisters and brothers. Also, each daughter has twice the number of brothers than sisters.  How many sons and daughters does Laloo have? 
 Brain Teaser No : 00541 A CAR has a value of 1 and a TRACTOR has a value of 2. What is the value of an AIRPLANE? Note that AIRPLANE costs more than CAR or TRACTOR.
Brain Teaser No : 00839
The secret agent X emailed some code to his head office. They are "RADAR, LEVEL, ROTOR, REDIVIDER, MOTOR". But four of these five words have something in common and one is fake. 
Can you tell which one is fake? Ignore the fact that four of the code-words are of the same length. 
Brain Teaser No : 00014
Five horses ran in the race.There were no ties. Sikandar did not come first. Star was neither first nor last. Mughal Glory came in one place after Sikandar. Zozo was not second. Rangila was two place below Zozo.In what order did the horses finish? 
 Search Result 41 - 48 Total Brain teasers found 537    
 Brain Teaser No : 00072 What is the minimum number of numbers needed to form every number from 1 to 7,000? Example: To form 4884, you would need 2 4s & 2 8s. 4822 requires a 4, a 8, & 2 2s, but you would not count the numbers again that you had already counted from making 4884. 
Brain Teaser No : 00124
How can 1,000,000,000 be written as a product of two factors neither of them containing zeros? 
Brain Teaser No : 00182    Subhash is 14 inches taller than Jatin. The difference between Subhash and Sanjeev is two inches less than between Sanjeev and Jatin. Subhash at 6'6" is the tallest. 
How tall are Sanjeev and Jatin? 
 Brain Teaser No : 00326  The sum of their (father, mother and son) ages is 70. The father is 6 times as old as the son. When the sum of their ages is twice 70, the father will be twice as old as the son. 
How old is the mother?
 Brain Teaser No : 00339  What numbers do X and Y represent in the following series: 2, 6, 12, 20, 30, 42, X, Y
Brain Teaser No : 00406
What is the four-digit number in which the first digit is 1/3 of the second, the third is the sum of the first and second, and the last is three times the second?
Submitted by : Dan Allen 
 Brain Teaser No : 00407
A 3 digit number is such that it's unit digit is equal to the product of the other two digits which are prime. Also, the difference between it's reverse and itself is 396. What is the sum of the three digits?
Brain Teaser No : 00007      On one side of a card is written : "THE SENTENCE ON THE OTHERSIDE OF THIS CARD IS TRUE." On turning the card over you find: "THE SENTENCE ON THE OTHERSIDE OF THIS CARD IS FALSE." Which sentence is true? 
Search Result 49 - 56 Total Brain teasers found 537    
 Brain Teaser No : 00011
When Alexander the Great attacked the forces of Porus, an Indian soldier was captured by the Greeks. He had displayed such bravery in battle, however, that the enemy offered to let him choose how he wanted to be killed. They told him, "If you tell a lie, you will put to the sword, and if you tell the truth you will be hanged." The soldier could make only one statement. He made that statement and went free. What did he say? 
 Brain Teaser No : 00017
A card contains following three sentences: 
THIS SENTENCE CONTAINS FIVE WORDS. 
THIS SENTENCE CONTAINS TWO VERBS. 
EXACTLY ONE SENTENCE ON THIS CARD IS TRUE.Is sentence C true or false? 
 Brain Teaser No : 00018
A barber in a certain small town shaves all the men who do not shave themselves, but never shaves any who do shave themselves. Does the barber shave himself? Note that the barber is a man. 
Brain Teaser No : 00086
A prisoner is told "If you tell a lie we will hang you; if you tell the truth we will shoot you." 
What can he say to save himself? Note that he must say something to save himself. 
Brain Teaser No : 00097
You have two jars, 50 red marbles and 50 blue marbles. A jar will be picked at random, and then a marble will be picked from the jar. You can place maximum of 50 marbles in each jar. 
Placing all of the marbles in the jars, how can you maximize the chances of a red marble being picked? What are the exact odds of getting a red marble using your scheme? 
Brain Teaser No : 00010
In a contest of intelligence, three problems A, B and C were posed.Among the contestants there were 25 who solved at least one problem each. Of all the contestants who did not solve problem A, the number who solved B was twice the number who solved C. The number of participants who solved only problem A was one more than the number who solved problem A and at least one other problem. Of all students who solved just one problem, half did not solve problem A.
How many students solved only problem B? 
 Brain Teaser No : 00015
In the town called Alibaug, the following facts are true: No two inhabitants have exactly the same number of hairs. No inhabitants has exactly 2025 hairs. There are more inhabitants than there are hairs on the head of any one inhabitants. What is the largest possible number of the inhabitants of Alibaug? 
 Brain Teaser No : 00060  A woman had two sons who were born on the same hour of the same day of the same month of the same year. But they were not twins. How could this be so? 
Search Result 57 - 64 Total Brain teasers found 537    
 Brain Teaser No : 00076
A cube is made of a white material, but the exterior is painted black. If the cube is cut into 125 smaller cubes of exactly the same size, how many of the cubes will have atleast 2 of their sides painted black? 
 Brain Teaser No : 00115   Four prisoners escape from a prison. The prisoners, Mr. East, Mr. West, Mr. South, Mr. North head towards different directions after escaping. The following information of their escape was supplied:The escape routes were North Road, South Road, East Road and West Road None of the prisoners took the road which was their namesake Mr. East did not take the South Road Mr.West did not the South Road The West Road was not taken by Mr. East
What road did each of the prisoners take to make their escape? 
 Brain Teaser No : 00480
There are N players in the Chess Tournament. If a player loses a game, he is immediately eliminated from the tournament. How many games will be played to determine the winner? 
Brain Teaser No : 00483   Four couples are going to the movie. Each row holds eight seats. Betty and Jim don't want to sit next to Alice and Tom. Alice and Tom don't want to sit next to Gertrude and Bill. On the otherhand, Sally and Bob don't want to sit next to Betty and Jim. How can the couples arrange themselves in a row so that they all sit where they would like? 
 Brain Teaser No : 00855  Angela had a craving for mixed nuts, but all she had in the cupboard was a bag of peanuts and a bag of almonds (Guess she needs to do some shopping). Being the smart young lady that she is, she poured all the almonds into an empty jar and then poured all of the peanuts on top, which did not quite fill the jar. Angela thought to herself, "I want mixed nuts." She put the lid on and begin vigorously shaking the jar up and down in order to get mixed nuts while watching education television. After a few minutes of continuous shaking she suddenly realized that the peanuts and almonds were not mixed at all. In fact, the almonds were on top! Angela was amazed to see that the almonds rose to the top, even though she knew that the almonds were bigger and heavier than the peanuts. She got to thinking that this is the same thing that happens in boxes of cereal and bags of potato chips. Why, she wonders, does the heavier objects shake to the top?  Can anyone out there help Angela figure this out.
Brain Teaser No : 00142
There are four groups of Mangoes, Apples and Bananas as follows: 
Group I : 1 Mango, 1 Apples and 1 Banana 
Group II : 1 Mango, 5 Apples and 7 Bananas 
Group III : 1 Mango, 7 Apples and 10 Bananas 
Group IV : 9 Mango, 23 Apples and 30 Bananas 
Group II costs Rs 300 and Group III costs Rs 390. 
Can you tell how much does Group I and Group IV cost? 
Brain Teaser No : 00550
There is a boat docked on the shore and there is a ladder on the side of the boat which reads 10 feet. The high tide comes in at 10:00AM and water level increases constantly at the rate of 2 feet per hour. What will the ladder read at 12:30PM?
Brain Teaser No : 00004
There is a family party consisting of two fathers, two mothers, two sons, one father-in-law, one mother-in-law, one daughter-in-law, one grandfather, one grandmother and one grandson. 
What is the minimum number of persons required so that this is possible? 
Search Result 65 - 72 Total Brain teasers found 537    
 Brain Teaser No : 00104   A farmer needs 8 gallons of water. He has only three unmared buckets, two 6 gallon and one 11 gallon bucket. How can he collect 8 gallons of water using three unmarked buckets? Provide solution with minimal water wastage. 
 Brain Teaser No : 00131
If a rooster is on top of a house and the rooster lays an egg which way will the egg fall down the house.
Brain Teaser No : 00144
There are 3 colored boxes - Red, Green and Blue. Each box contains 2 envelopes. Each envelope contains money - two of them contain Rs. 25000 each, two of them contain Rs. 15000 each and remaining two contain Rs. 10000 each. There is one statement written on the cover of each box. 
* Red Box: Both, a red box and a blue box contain Rs. 10000 each. 
* Green Box: Both, a green box and a red box contain Rs. 25000 each. 
* Blue Box: Both, a blue box and a green box contain Rs. 15000 each. 
Only one of the above 3 statements is true and the corresponding box contains the maximum amount. Can you tell which box contains the maximum amount and how much? 
  Brain Teaser No : 00009
A man was looking at a portrait. Someone asked him, "Whose picture are you looking at?" 
He replied, pointing at the portrait : "Brothers and sisters have I none, but this man's father is my father's son." Whose picture was the man looking at? 
 Brain Teaser No : 00013
A man was looking at a portrait. Someone asked him, "Whose picture are you looking at?" 
He replied, pointing at the portrait: "Brothers and sisters have I none, but this man's son is my father's son." Now whose picture is the man looking at? 

 Brain Teaser No : 00103
Three friends divided some bullets equally. After all of them shot 4 bullets the total number of bullets remaining is equal to the bullets each had after division. Find the original number divided. 
Brain Teaser No : 00188
What letter comes next in the series: O, T, T, F, F, S, S, E, N, _?
Brain Teaser No : 00211
A man went downstairs to get a drink. He turned of the tap and the lights and went to bed. When he woke up in the middle of the night he saw thousands of people dead, so he jumped out the window and killed himself. Why did he kill himself?
  Search Result 73 - 80 Total Brain teasers found 537    
 Brain Teaser No : 00245
Some will use me, while others will not. Some have remembered, while others have forgot. 
For profit or gain, I'm used expertly. I can't be picked off the ground or tossed into the sea. 
Only gained from patience and time, can you unravel my rhyme? 
 Brain Teaser No : 00506
What is the last digit of 746? In other words, what will the remainder be, if 746 is divided by 10? 
Don't try to solve this on calculator, you may get the wrong answer. Also, do explain your answer. 
Brain Teaser No : 00053
A man is going to an Antique Car auction. All purchases must be paid for in cash. He goes to the bank and draws out $25,000. Since the man does not want to be seen carrying that much money, he places it in 15 evelopes numbered 1 through 15. Each envelope contains the least number of bills possible of any available US currency (i.e. no two tens in place of a twenty). At the auction he makes a successful bid of $8322 for a car. He hands the auctioneer envelopes number(s) 2, 8, and 14. After opening the envelopes the auctioneer finds exactly the right amountHow many ones did the auctioneer find in the envelopes? 
 Brain Teaser No : 00160
A family photo contained: 
one grandfather, one grandmother; two fathers, two mothers;  six children, four grandchildren; 
two brothers, two sisters; three sons, three daughters;  one father-in-law, one mother-in-law, one daughter-in-law, one son-in-law 30 people you may think, but no, what is the least number of people here? 
 Brain Teaser No : 00172
If you were to spell out numbers (starting from 1) in English, how far would you have to go until you would find the letter "A"? 
Brain Teaser No : 00200
An apple vendor has 1000 apples and 10 empty boxes. He asks his son to place all the 1000 apples in all the 10 boxes in such a manner that if he asks for any number of apples from 1 to 1000, his son should be able to pick them in terms of boxes. How did the son place all the apples among the 10 boxes, given that any number of apples can be put in one box. 
 Brain Teaser No : 00357
Three men - Sam, Cam and Laurie - are married to Carrie, Billy and Tina, but not necessarily in the same order. Sam's wife and Billy's Husband play Carrie and Tina's husband at bridge. No wife partners her husband and Cam does not play bridge. Who is married to Cam? 
 Brain Teaser No : 00429
Mr. Desai lives at 20, Dabba Street with his wife Shirin. They have have nine sons and each son has one sister. How many members are in Mr. Desai's family? 
Search Result 81 - 88 Total Brain teasers found 537    
 Brain Teaser No : 00180
Which number in the series does not fit in the given series: 1 4 3 16 6 36 7 64 9 100 
Brain Teaser No : 00183
Thirty white horses on a red hill, First they champ, Then they stamp, Then they stand still. 
 Brain Teaser No : 00205
Which is correct: 
A> The Second Millennium began on Jan 1, 2000 
B> The Second Millennium will begin on Jan 1, 2001 
 Brain Teaser No : 00209
If today is Wednesday, what is one day before the day, after the day, three days after the day before yesterday?Submitted by : Jennifer Renick 
 Brain Teaser No : 00233
A man is looking at a picture, in his mother's, only brother's, nephew's house. Someone walks by this man and asks "Who are you looking at?". The man answered "I am looking at my daughter's,only brother's, mother's, father's son-in-law's,son's, father's picture. Also, neither I nor my wife have brothers or sisters." Whose house is the man in and who is he looking at?
Submitted by : Hannah Brooks 
 Brain Teaser No : 00234
Substitute digits for the letters to make the following Division true.
                   A L E
              ------------
        C A R | E A R L Y
              | C A R
              -----------
                R F F L
                I L Y I
                ---------
                  Y Y I Y
                  Y Y A U
                 --------
                        T
Note that the leftmost letter can't be zero in any word. Also, there must be a one-to-one mapping between digits and letters. e.g. if you substitute 3 for the letter Y, no other letter can be 3 and all other Y in the puzzle must be 3.
Brain Teaser No : 00237
A girl has a certain number of pets. All but two are dogs, all but two are cats and all but two are goats. How many pets does this girl have?
Brain Teaser No : 00201
What is so fragile that when you say its name you break it? 
Search Result 81 - 88 Total Brain teasers found 537    
 Brain Teaser No : 00057
One day Kerry celebrated her birthday. Two days later her older twin brother, Terry, celebrated his birthday. How? Note that they both celebrated their birthday on their actual birthdays. 
 Brain Teaser No : 00059
A man went to a party and drank some of the punch. He then left early. Everyone else at the party who drank the punch subsequently died of poisoning. Why did the man not die? Please note that he did not add the poison. Also, nothing was added to punch after he left. 
 Brain Teaser No : 00571
Substitute digits for the letters to make the following relation true. 
                  S E N D
                + M O R E
               ----------
                M O N E Y
Note that the leftmost letter can't be zero in any word. Also, there must be a one-to-one mapping between digits and letters. e.g. if you substitute 3 for the letter S, no other letter can be 3 and all other S in the puzzle must be 3.
Brain Teaser No : 00580
In Column-I below, are given some words. These have been translated into a code language. The code equivalents of the words in Column-I are given in Column-II, not necessarily opposite to the corresponding words. Also, the codes for the different letters in each word have also not been given the same order as these letter occur in the original word.
          COLUMN-I           COLUMN-II
        ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
          TAPE               moi
          COP                lhhpok
          TIE                nls
          ROTATE             nhpk
          SAY                nkpl
          TREAT              msr
          YEAR               khlph
          SIP                hrp
          TYRE               pmlh
Can you decode the individual letter codes? 
Brain Teaser No : 00046
What is the area of the triangle ABC with A(e,p) B(2e,3p) and C(3e,5p)? where p = PI (3.141592654) 
 Brain Teaser No : 00166
I have holes in my top and bottom, my left and right, and in my middle. But I still hold water. What am I? 
 Brain Teaser No : 00175
A woman is about to be executed. Since she has been a good citizen most of her life, the executioner gives her the option of chosing by which way she can die, no matter how bizarre, time-consuming, or costly it is. What manner of death should she choose, or will it not make a difference? 
 Brain Teaser No : 00202
Weight in my belly,    Trees on my back, Nails in my ribs,     Feet I do lack. Who or what am I?
Search Result 89 - 96 Total Brain teasers found 537    
 Brain Teaser No : 00360
Mrs. F has invited several wives of delegates to the United Nations for an informal luncheon. She plans to seat her 9 guests ina row such that each lady will be able to converse with the person directly to her left and right. She has prepared the following list. 
Mrs. F speaks English only. Mrs. G speaks English and French. 
Mrs. H speaks English and Russian.Mrs. J speaks Russian only. 
Mrs. K speaks English only. Mrs. L speaks French only. 
Mrs. M speaks French and German.Mrs. N speaks English and German. 
Mrs. O speaks English only. How many distinct seating arrangements are possible? Give all possible seating arrangements.Note that ABCD and DCBA are the same. 
 Brain Teaser No : 00149
As I was traveling to St.Petersberg I saw a man with 7 wives, with 7 kittens, in 7 sacks, and with 7 drinks on a bike. How many people/things are going to St. Petersberg?
Brain Teaser No : 00163
What belongs to you, but is almost entirely used by other people?
Brain Teaser No : 00204
It cannot be seen, cannot be felt Cannot be heard, cannot be smelt It lies behind stars and under hills And empty holes it fills It comes first and follows after Ends life, kills laughter. 
 Brain Teaser No : 00236
When was the last time all the digits in the date (dd-mm-yyyy) were a prime number? When will the next one be? Ignore any leading zeroes.
Brain Teaser No : 00240
Ben can never tell a lie, George can never tell the truth. One of them said, "The other one said he was George". Who said that?
Brain Teaser No : 00383
Consider a state lottery where you get to choose 8 numbers from 1 to 80, no repetiton allowed. The Lottery Commission chooses 11 from those 80 numbers, again no repetition. You win the lottery if atleast 7 of your numbers are there in the 11 chosen by the Lottery Commission. 
What is the probablity of winning the lottery? 
Brain Teaser No : 00443
You are given an arbitrarily long string of parentheses i.e. a string comprising of '(' and ')'. 

Give an efficient way of finding whether a given string contains a balanced parentheses or not. Note that the string can be of any length. A string with balanced parentheses is a string containing same number of left parentheses '(' and right parentheses ')'. Also, they must be in correct order i.e. ( ( ) ( ) ) is balanced whereas ( ) ) ( ( ) is not. 
Search Result 97 - 104 Total Brain teasers found 537    
 Brain Teaser No : 00176
Voiceless it cries, Wingless it flutters, Toothless bites, Mouthless mutters.What or who am I?
Brain Teaser No : 00264
There is a girl running from some robbers. She holds two solid gold balls each weighing 20 pounds. She comes to an old rope bridge and a sign that says max weight 130 pounds.
Knowing her weight was 100 pounds, she walked across the bridge with both gold balls, without the bridge breaking. How did she do that?
Brain Teaser No : 00301
Always talked of, Never heard, Never forgotten,Everybody waits for it, It always comes, 
Never stays, Always looked for,Never found.What am I? 
 Brain Teaser No : 00308
The man who makes it sells it. The man who buys it doesn't use it. 
The man who uses it doesn't see it. What is it?
Brain Teaser No : 00317
What appears once in a minute, twice in a moment, but not in a thousand years?
Brain Teaser No : 00359
Let's say that you were a bus driver. At the 1st stop 10 people got on the bus, 2nd stop 3 people got on the bus and 2 got off, 3rd stop 23 people got on and 9 got off, 4th stop 53 people got on, 5th stop 30 people got off another 2 people got off and then got back on, and 4 got on at this bus stop. Now at the last stop before the bus came to its final destination 29 peolpe got on and 23 people got on. What was the bus drivers name?
Brain Teaser No : 00376
What do you throw out when you want to use it, But you take in when you don't want to use it?
Submitted by : kirby belinda shaver 
  Brain Teaser No : 00642
It flies without wings, Drops without fear,But held in warm hands, It will soon disappear.
   Search Result 105 - 112 Total Brain teasers found 537    
 Brain Teaser No : 00318
What goes up and never goes down?
Brain Teaser No : 00350
If a butcher's clerk is 5 ft 10 inches. What does he weigh?
Brain Teaser No : 00356
Spell "hard water" using only 3 letters.
Brain Teaser No : 00418
There was a man who bought lots of bunches of bananas at $3 each and sold them on for $2. In doing so he became a millionaire. How is this possible?
Brain Teaser No : 00448
How many birthdays does an average man have?
 Brain Teaser No : 00482
There is a lady who has 2 children, 3 grandchildren and 4 great grandchildren. The lady who had all of these kids is only 25 years old. How is this possible?
 Brain Teaser No : 00560
A woman shoots her husband. Then she holds him under water for over 5 minutes. Finally she hangs him. But 5 minutes later they both go out together and enjoy a wonderful dinner together. 
How can this be?
Brain Teaser No : 00612
Think of words ending in -gry. Angry and Hungry are two of them. There are only three words in the English language. What is the third word? The word is something that everybody uses everyday. If you have listened carefully, I have already told you what it is. 
   Search Result 113 - 120 Total Brain teasers found 537    
 Brain Teaser No : 00056
A man is wearing black. Black shoes, socks, trousers, jumper, gloves and balaclava. He is walking down a black street with all the street lamps off. A black car is coming towards him with its light off but somehow manages to stop in time. How did the driver see the man? 
 Brain Teaser No : 00067
Two planes take off at the same exact moment. They are flying across the Atlantic. One leaves New York and is flying to Paris at 500 miles per hour. The other leaves Paris and is flying to New York at only 450 miles per hour ( because of a strong head wind ). 
Which one will be closer to Paris when they meet? 
Brain Teaser No : 00070
All of the students at a college are majoring in psychology, business, or both. 73% of the students are psychology majors, & 62% are business majors. If there are 200 students, how many of them are majoring in both psychology & business? 
 Brain Teaser No : 00095
You have a bucket of jelly beans. Some are red, some are blue, and some green. With your eyes closed, pick out 2 of a like color. How many do you have to grab to be sure you have 2 of the same? 
 Brain Teaser No : 00117
I bought a car with a peculiar 5 digit numbered licence plate which on reversing could still be read. On reversing value is increased by 78633. Whats the original number if all digits are different? 
 Brain Teaser No : 00601
Madam, I'm Adam. Able was I ere I saw Elba. Egad, a base tone denotes a bad age. 
What do these 3 sentences have in common? 
Brain Teaser No : 00641
Has a toungue, But never talks.Has no legs, But sometimes walks
Brain Teaser No : 00673
What is broken but right two times a day?
Search Result 121 - 128 Total Brain teasers found 537    
 Brain Teaser No : 00125
A person with some money spends 1/3 for cloths, 1/5 of the remaining for food and 1/4 of the remaining for travel. He is left with Rs 100/- How much did he have with him in the begining? 
 Brain Teaser No : 00184
Of the 120 people in the room, 3/5 are women. If 2/3 of the people are married, what is the maximum number of women in the room who could be unmarried? 
Brain Teaser No : 00251
The word has the first two letters meaning male. The first three letters meaning female. 
The first four letters meaning male. And the whole word meaning female. What is the word?
Brain Teaser No : 00282
I can be long, or I can be short. I can be grown, or I can be bought. 
I can be painted, or I can be left bare.I can be round, or I can be square.What am I?
Brain Teaser No : 00331
Draw 9 dots on a page, in the shape of three rows of three dots to form a square. Now place your pen on the page, draw 4 straight lines and try and cover all the dots. You're not allowed to lift your pen. Note: Don't be confined by the dimensions of the square.
 Brain Teaser No : 00352
It can hold you, But you cannot hold it. And the more you remove,The bigger it will get. What is it? 
Brain Teaser No : 00405
THE WIZARDS PROBLEM The old wizard of Wallapoo lived alone in a tall tower on a hilltop. One day, he decided to take a bath.The bathroom was at the very top of the tower. It was a small room, with only one door and no windows. The walls, floor and ceiling were made of stone. The wizard got into the tub and turned on the water. Just then his cat chased a mouse, past the door. The cat bumped into the door and it swung shut with a thump. The bump jarred the latch, and the wizard heard it click. He was locked in the bathroom! Angrily, the wizard turned off the faucet - and the handle broke off in his hand. Water continued to pour out of the faucet. There was no way to shut it off. Slowly the water begun to fill the bathtub. The wizard knew that in time the whole room would be filled with water - and he couldnt get out. How did the wizard keep from drowning? (AND REMEMBER HE DIDNT USE MAGIC)
Brain Teaser No : 00507
A mule and a donkey were carrying full sacks on their backs. The mule started complaining that his load was too heavy. The donkey said to him "Why are you complaining? If you gave me one of your sacks I'd have double what you have and if I give you one of my sacks we'd have an even amount." How many sacks were each of them carrying? Give the minimal possible answer.
Submitted by : Megan Ponta 
Search Result 129 - 136 Total Brain teasers found 537    
 Brain Teaser No : 00230
A sheet of paper has statements numbered from 1 to 100. Statement N says "Exactly N of the statements on this sheet are false." How many statements are true? 
 Brain Teaser No : 00314
You throw away the outside. You cook the inside. You eat the outside. You throw away the inside. What is it?
Brain Teaser No : 00334
A man has Ten Horses and nine stables as shown here.
  [] [] [] [] [] [] [] [] []
The man wants to fit Ten Horses into nine stables. How can he fit Ten horses into nine stables?
Brain Teaser No : 00353
Answers its caller without being asked Responds within seconds, and 
Speaks all languages with equalease.What is it? 
 Brain Teaser No : 00367
With no wings, I fly With no eyes, I see   With no arms, I climb  More frightening than any beast 
stronger than any foe I am cunning, ruthless, and tall In the end, I rule all What am I?
Brain Teaser No : 00458
There are two vehicles, a car and a train, heading towards the same rail crossing. (where a road intersects with the tracks) Both are travelling at a constant speed of 70mph, and both are at the same distance from the crossing. Neither vehicle changes course or alters its speed. Yet there is no collision and no accident of any kind.Why not?
Brain Teaser No : 00591   In 1990, a person is 15 years old. In 1995, that same person is 10 years old. How is this possible?
Brain Teaser No : 00722
What do you first give away, then keep?
Search Result 137 - 144 Total Brain teasers found 537    
 Brain Teaser No : 00421
A man is at a river with a 9 gallon bucket and a 4 gallon bucket. He needs exactly 6 gallons of water. How can he use both buckets to get exactly 6 gallons of water? Note that he cannot estimate by dumping some of the water out of the 9 gallon bucket or the 4 gallon bucket.
Brain Teaser No : 00444
Silu and Meenu were walking on the road. 
Silu said, "I weigh 51 Kgs. How much do you weigh?" 
Meenu replied that she wouldn't reveal her weight directly as she is overweight. But she said, "I weigh 29 Kgs plus half of my weight." How much does Meenu weigh? 
 Brain Teaser No : 00766
What is Black when you buy it,   Red when you use it, and   Gray when you throw it away?
Brain Teaser No : 00027
Find the smallest number such that if its rightmost digit is placed at its left end, the new number so formed is precisely 50% larger than the original number. 
Brain Teaser No : 00032
Find the smallest number N which has the following properties:its decimal representation has 6 as the last digit. If the last digit 6 is erased and placed in front of the remaining digits, the resulting number is four times as great as the original number N.
 Brain Teaser No : 00026
Find the last digit of summation of the series: 199 + 299 + 399 + 499 + ……… + 9899 + 9999 
 Brain Teaser No : 00039
Find next number in the series : 3, 7, 31, 211, ? 
 Brain Teaser No : 00073
12 members were present at a board meeting. Each member shook hands with all of the other members before & after the meeting. How many hand shakes were there? 
Search Result 145 - 152 Total Brain teasers found 537    
 Brain Teaser No : 00170
A series comprising of alphabets contains 13 letters. The first seven letters in the given series are A, E, F, H, I, L, M Can you find the next two letters? 
 Brain Teaser No : 00259
What is the smallest number which when divided by 10 leaves a remainder of 9, when divided by 9 leaves a remainder of 8, when divided by 8 leaves a remainder of 7, when divided by 7 leaves a remainder of 6 and so on until when divided by 2 leaves a remainder of 1? 
Brain Teaser No : 00001
At what time immediately prior to Six O'clock the hands of the clock are exactly opposite to each other. Give the exact time in hours, minutes and seconds. 
Brain Teaser No : 00058
Why is it better to have round manhole covers than square ones? 
 Brain Teaser No : 00274
Find all sets of consecutive integers that add up to 1000.
Brain Teaser No : 00422                What are the next three numbers in the given series? 0 1 1 2 1 2 1 3 2 2 1 3 1 2 2 4 1 3 1 3 2 2 1 ? ? ? 
 Brain Teaser No : 00445
Dr. DoLittle always goes walking to the clinic and takes the same time while going and while coming back. One day he noticed something. When he left the home, the hour hand and the minute hand were exactly opposite to each other and when he reached the clinic, they were together. Similarly, when he left the clinic, the hour hand and the minute hand were together and when he reached the home, they were exactly opposite to each other. How much time does Dr. DoLittle take to reach home from the clinic? Give the minimal possible answer. 
 Brain Teaser No : 00094
There are 3 ants at 3 corners of a triangle, they randomly start moving towards another corner. 
What is the probability that they don't collide? 
Search Result 153 - 160 Total Brain teasers found 537    
 Brain Teaser No : 00146
Sachin, Dravid and Ganguly played in a Cricket match between India and England.
None of them scored more than 99 runs. If you add the digits of the runs scored by Sachin to his own score, you will get the runs scored by Dravid. If you reverse the digits of the runs scored by Dravid, you will get the runs scored by Ganguly. The total runs scored by them is 240.
Can you figure out their individual scores? 
 Brain Teaser No : 00065
Because cigars cannot be entirely smoked, a Bobo who collects cigar butts can make a cigar to smoke out of every 3 butts that he finds. Today, he has collected 27 cigar butts. How many cigars will he be able to smoke? 
 Brain Teaser No : 00207
A tank can be filled by pipe A in 30 minutes and by pipe B in 24 minutes. Outlet pipe C can empty the full tank in X minutes. If the tank is empty initially and if all the three pipes A, B and C are opened simultaneously, the tank will NEVER be full. Give the maximal possible value of X. 
Brain Teaser No : 00471
SlowRun Express runs between Bangalore and Mumbai, For the up as well as the down journey, the train leaves the starting station at 10:00 PM everyday and reaches the destination at 11:30 PM after three days. Mr. Haani once travelled by SlowRun Express from Mumbai to Bangalore. How many SlowRun Express did he cross during his journey? 
 Brain Teaser No : 00475
My house has a number.If my house number is a multiple of 3, then it is a number from 50 through 59. If my house number is not a multiple of 4, then it is a number from 60 through 69. 
If my house number is not a multiple of 6, then it is a number from 70 through 79.
What is my house number? 
 Brain Teaser No : 00579
Mr. Wagle goes to work by a bus. One day he falls asleep when the bus still has twice as far to go as it has already gone. Halfway through the trip he wakes up as the bus bounces over some bad potholes. When he finally falls asleep again, the bus still has half the distance to go that it has already travelled. Fortunately, Mr. Wagle wakes up at the end of his trip. 
What portion of the total trip did Mr. Wagle sleep? 
Brain Teaser No : 00706
Given the following facts: Dinesh is younger than Farukh and older than Gurmit. 
Jatin is younger than Chandu and older than Eshrat. 
Amit is younger than Irfan and older than Chandu. 
Farukh is younger than Bhavin and older than Hemant. 
Irfan is younger than Gurmit and older than Jatin. 
Hemant is older than Gurmit. Who is the Youngest? 
 Brain Teaser No : 00116
Complete the series :  5, 20, 24, 6, 2, 8, ? 
   Search Result 161 - 168 Total Brain teasers found 537    
 Brain Teaser No : 00129
You are stuck in a room with 2 doors. One door is the way out and the other one leads to Hell. In this room there are two computers, one always lies and one always tells the truth. How do you get out safely? Once you open a door, you must go through it and can never turn back. You can ask only one question to any one of the computer. 
 Brain Teaser No : 00143
Substitute numbers for the letters so that the following mathematical expressions are correct.
   ABC           DEF           GHI
   --- = IE      --- = IE      --- = IE
    3             6             9
Note that the same number must be used for the same letter whenever it appears. 
Brain Teaser No : 00181
How do you cut a square cake into 8 equal piece only using 3 straight cuts? Note that you can not move the pieces as you cut the cake.
Brain Teaser No : 00228
For many years a BIG company was looking for the universial solvent - a solvent that will dissolve anything. One day a man walked in a bottle in his hand. The man said "I've come up with the UNIVERSAL solvent!! And if you're lucky, i will sell it to you for a mere $100,000!" 
The president looked seriously at the man and screamed, "Get out of here you stupid creep! You're a dumb liar and a fake!!!" And with that the president of this huge company picked up the guy and threw him out by his feet. How did the president know the man was a fake before he even tested the solvent?
Brain Teaser No : 00499
Six cabins numbered 1-6 consecutively, are arranged in a row and are separated by thin dividers. These cabins must be assigned to six staff members based on following facts. 
Miss Shalaka's work requires her to speak on the phone frequently throughout the day. 
Miss Shudha prefers cabin number 5 as 5 is her lucky number. 
Mr. Shaan and Mr. Sharma often talk to each other during their work and prefers to have adjacent cabins. Mr. Sinha, Mr. Shaan and Mr. Solanki all smoke. Miss Shudha is allergic to smoke and must have non-smokers adjacent to her. 
Mr. Solanki needs silence during work. Can you tell the cabin numbers of each of them? 
 Brain Teaser No : 00520
Somebody marked the six faces of a die with the numbers 1, 2 and 3 - each number twice. The die was put on a table. Four people - Abu, Babu, Calu and Dabu - sat around the table so that each one was able to see only three sides of the die at a glance.
Abu sees the number 1 and two even numbers. Babu and Calu can see three different numbers each. Dabu sees number 2 twice and he can't remember the third number.
What number is face down on the table? 
 Brain Teaser No : 00633
Assume that you have just heard of a scandal and you are the first one to know. You pass it on to four person in a matter of 30 minutes. Each of these four in turn passes it to four other persons in the next 30 minutes and so on. How long it will take for everybody in the World to get to know the scandal? Assume that nobody hears it more than once and the population of the World is approximately 5.6 billions. 
 Brain Teaser No : 00047
The ratio of Boys to Girls is 6:4. 60% of the boys and 40% of the girls take lunch in the canteen. What % of class takes lunch in canteen? 
Search Result 169 - 176 Total Brain teasers found 537    
 Brain Teaser No : 00112
A hole that is 3 feet deep, and 6 inches in diameter, has how much dirt in it..? 
Brain Teaser No : 00141
Before Mount Everest was discovered, what was the largest mountain above water on Earth ?
Brain Teaser No : 00231
What two numbers comes next in this series?:  1, 2, 3, 6, 7, 14, 15, 30, 31, ? ?
Brain Teaser No : 00278
What are the next two in the series? st, nd, rd, th, th, ..., ...
Brain Teaser No : 00338
Insert mathematical functions to convert the 3 numbers on the left side of the equation to equal 6. I filled in the 2's (using the addition function twice) for you to get you started.
           1         1         1    =    6
           2    +    2    +    2    =    6
           3         3         3    =    6
           4         4         4    =    6
           5         5         5    =    6
           6         6         6    =    6
           7         7         7    =    6
           8         8         8    =    6
           9         9         9    =    6
Submitted by : Jon 
Brain Teaser No : 00603
A mental patient was being treated at an asylum because he thought he was Napoleon. The warden gave him a lie-detector test and asked him whether or not he was Napoleon. He said, "No". The machine said he was lying. Is the man delirious or not?
Brain Teaser No : 00630
In a school, main-computer password changes after every hour based on set of words chosen for each day. The following is the set of passwords for a particular day.
 9AM-1st Password: is not ready cloth brain bath simple
10AM-2nd Password: ready not is cloth simple bath brain
11AM-3rd Password: cloth is not ready brain bath simple
12PM-4th Password: not is cloth ready simple bath brain
 1PM-5th Password: ready cloth is not brain bath simpleFollowing the same rule, what will the 6th Password, if the 1st passoward is "Shy Shelly Says She Shall Sew Sheets"? 
 Brain Teaser No : 00025
What is the remainder left after dividing 1! + 2! + 3! + … + 100! By 7? Think carefully !!! 
Search Result 177 - 184 Total Brain teasers found 537    
 Brain Teaser No : 00080
A worker earns a 5% raise. A year later, the worker receives a 2.5% cut in pay, & now his salary is Rs. 22702.68 What was his salary to begin with? 
 Brain Teaser No : 00089
There are 20 poles with a constant distance between each pole. A car takes 24 second to reach the 12th pole. How much will it take to reach the last pole. 
 Brain Teaser No : 00111
In a certain year, the number of girls who graduated from City High School was twice the number of boys. If 3/4 of the girls and 5/6 of the boys went to college immediately after graduation, what fraction of the graduates that year went to college immediately after graduation? 
 Brain Teaser No : 00319
Substitute digits for the letters to make the following relation true.
                S  T  I  L  L
          +  W  I  T  H  I  N
          --------------------
             L  I  M  I  T  S
Note that the leftmost letter can't be zero in any word. Also, there must be a one-to-one mapping between digits and letters. e.g. if you substitute 3 for the letter S, no other letter can be 3 and all other S in the puzzle must be 3. 
Brain Teaser No : 00370
You have 14 apples. Your Friend Marge takes away 3 and gives you 2. You drop 7 but pick up 4. Bret takes 4 and gives 5. You take one from Marge and give it to Bret in exchange for 3 more. You give those 3 to Marge and she gives you an apple and an orange. Frank comes and takes the apple Marge gave you and gives you a pear. You give the pear to Bret in exchange for an apple. Frank then takes an apple from Marge, gives it to Bret for an orange, gives you the orange for an apple. How many pears do you have?
Brain Teaser No : 00540
In Column-I below, are given some words. These have been translated into a code language. The code equivalents of the words in Column-I are given in Column-II, not necessarily opposite to the corresponding words. Also, the codes for the different letters in each word have also not been given the same order as these letter occur in the original word.
          COLUMN-I           COLUMN-II
        ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
          DELIBERATION       aemrqs
          CONSIDERATE        ccehlmo
          GHOSTLIKE          cfhmoqqrx
          WORLDLY            cdgmqrsxz
          KNOWLEDGE          adefmopqqsz
          ROCKET             cefkmopqqszz
Can you decode the individual letter codes? 
Brain Teaser No : 00660
Gomzi has 3 timepieces in his house - a wall clock, an alarm clock and a wristwatch. The wristwatch is always accurate, whereas the wall clock gains 2 minutes everyday and the alarm clock loses 2 minutes everyday. At exactly midnight last night, all three watches were showing the same time. If today is 25 July 2003, then on which date all three clocks will show the same time again? 
 Brain Teaser No : 00019
There are 3 persons X, Y and Z. On some day, X lent tractors to Y and Z as many as they had. After a month Y gave as many tractors to X and Z as many as they have. After a month Z did the same thing. At the end of this transaction each one of them had 24. 
Find the tractors each originally had? 
Search Result 185 - 192 Total Brain teasers found 537    
 Brain Teaser No : 00021
A rich man died. In his will, he has divided his gold coins among his 5 sons, 5 daughters and a manager. According to his will: First give one coin to manager. 1/5th of the remaining to the elder son. Now give one coin to the manager and 1/5th of the remaining to second son and so on..... After giving coins to 5th son, divided the remaining coins among five daughters equally. 
All should get full coins. Find the minimum number of coins he has? 
Brain Teaser No : 00108
Substitute digits for the letters to make the following relation true. 
                 S O M E
               + G O O D 
              ---------- 
               I D E A S
Note that the leftmost letter can't be zero in any word. Also, there must be a one-to-one mapping between digits and letters. e.g. if you substitute 3 for the letter S, no other letter can be 3 and all other S in the puzzle must be 3. 
Brain Teaser No : 00515
John lives in "Friends Society" where all the houses are in a row and are numbered sequentially starting from 1. His house number is 109. Jessy lives in the same society. All the house numbers on the left side of Jessy's house add up exactly the same as all the house numbers on the right side of her house. What is the number of Jessy's house? Find the minimal possible answer. 
 Brain Teaser No : 00006
You are working in a store that stocks bangles. Three boxes of bangles have been incorrectly labeled. The labels say Red Bangles, Green Bangles and Red & Green Bangles. How can you re-label the boxes correctly, by taking only one bangle from one box? 
 Brain Teaser No : 00030
A certain street has 1000 buildings. A sign-maker is contracted to number the houses from 1 to 1000. How many zeroes will he need? 
 Brain Teaser No : 00041
A polygon has 1325 diagonals. How many vertices does it have? 
Brain Teaser No : 00044
Put the appropriate plus or minus signs between the numbers below, in the correct places, so that the value of the expression on the left will equal the value on the right: 
0 1 2 3 4 5 6 7 8 9 = 1 
Brain Teaser No : 00049
The average scores of the class for exam are as follow: Average score of the boys = 90 
Average score of the girls = 81 Average score of the class = 84 
Find whether Class contains more Boys or Girls? 
Search Result 193 - 200 Total Brain teasers found 537    
 Brain Teaser No : 00082
If you added together the number of 2's in each of the following sets of numbers, which set would contain the most 2's: 1-333, 334-666, or 667-999? 
Brain Teaser No : 00093
There is a number that is 5 times the sum of its digits. What is this number? Answer is not 0. 
Brain Teaser No : 00849
In the General meeting of "Friends Club", Sameer said, "The repairs to the Club will come to a total of Rs 3120 and I propose that this amount should be met by the members, each paying an equal amount." The proposal was immediately agreed. However, four members of the Club chose to resign, leaving the remaining members to pay an extra Rs 26 each. How many members did the Club originally have? 
 Brain Teaser No : 00128
There is a perfect sphere of diameter 40 cms. resting up against a perfectly straight wall and a perfectly straight floor i.e. the wall and the floor make a perfect right angle. Can a perfect sphere of diameter 7 cms. pass through the space between the big sphere, the wall and the floor? Support your answer with valid arguments. Don't submit just "Yes" or "No". 
 Brain Teaser No : 00222
Consider a chessboard with a single Rook. A Rook can move any number of square sideways/forward, but not diagonally. What is the minimum number of moves the Rook needs to make, in order to pass over all the squares on the chessboard and return to the original position? 
Note: Take any square as a starting position for the Rook. 
Brain Teaser No : 00241
He got it in the woods and brought it home in his hand because he couldn't find it. The more he looked for it, the more he felt it. When he finally found it, he threw it away. What it is? 
 Brain Teaser No : 00270
Can you arrange nine buttons to make ten rows, three buttons in each row?
Brain Teaser No : 00291
A drinks machine offers three selections - Tea, Coffee or Random (Either tea or Coffee) but the machine has been wired up wrongly so that each button does not give what it claims. 

If each drink costs 50p, how much minimum money do you have to put into the machine to work out which button gives which selection?Submitted by : Alex Crosse 
Search Result 201 - 208 Total Brain teasers found 537    
 Brain Teaser No : 00320
You are given 12 balls and one of them has a weight defect - either heavier or lighter. We don't know which one it is. You are allowed to use the balance pan three times. 
Find out which one of the twelve is the defective ball?
Brain Teaser No : 00345
What are the next three numbers in the given series? 1 2 3 2 1 2 3 4 2 1 2 3 4 3 2 ? ? ? 
Brain Teaser No : 00595
Substitute digits for the letters to make the following addition problem true.
                           I
               A  G  R  E  E
          +          I  T  S
          -------------------
               T  O  U  G  H
Note that the leftmost letter can't be zero in any word. Also, there must be a one-to-one mapping between digits and letters. e.g. if you substitute 3 for the letter S, no other letter can be 3 and all other S in the puzzle must be 3. 
Brain Teaser No : 00051
8 Queens Problem  In how many ways can you arrange 8 queens on a standard chessboard in such a way that none of them is attacking any other? 
 Brain Teaser No : 00061
Three friends check into a hotel for the night and the clerk tells them the bill is Rs. 30, payable in advance. So, they each pay the clerk RS. 10 and go to their room.A few minutes later, the clerk realizes he has made an error and overcharged the trio by Rs 5. He asks the hotel-boy to return Rs. 5 to the 3 friends who had just checked in. The hotel-boy sees this as an opportunity to make Rs. 2 as he reasons that the three friends would have a tough time dividing Rs. 5 evenly among them; so he decides to tell them that the clerk made a mistake of only Rs. 3, giving a rupee back to each of the friends. He pockets the leftover Rs. 2 and goes home for the day! Now, each of the three friends gets a rupee back, thus they each paid Rs. 9 for the room which is a total of Rs. 27 for the night. We know the hotel-boy pocketed Rs. 2 and adding that to the Rs. 27, you get Rs. 29, not Rs. 30 which was originally spent. Where did the other rupee go??? 
 Brain Teaser No : 00107
If you look at a clock and the time is 3:15. 
What is the angle between the hour and the minute hands? ( The answer to this is not zero!) 
Brain Teaser No : 00136
What are the next two numbers in the series? 34, 58, 56, 60, 42, 52, 65, ?, ? 
Brain Teaser No : 00289
You have 13 balls which all look identical. All the balls are the same weight except for one. Using only a balance scale, can find the odd one out with only 3 weighings? 
Is it possible to always tell if the odd one out is heavier or lighter than the other balls?
Search Result 209 - 216 Total Brain teasers found 537    
 Brain Teaser No : 00558
There are four people in a room (not including you). Exactly two of these four always tell the truth. The other two always lie. You have to figure out who is who IN ONLY 2 QUESTIONS. Your questions have to be YES or NO questions and can only be answered by one person. (If you ask the same question to two different people then that counts as two questions). Keep in mind that all four know each other's characteristics whether they lie or not. What questions would you ask to figure out who is who? Remember that you can ask only 2 questions.
 Brain Teaser No : 00566
Here is the family tree of Mr. RAHUL
                          RAHUL
                            |
      ---------------------------------------------
      |              |             |              |
    RATISH          YASH          OM            TRILOK
      |                            |               ?
   --------                ------------------
   |      |                |       |        |
  AMAR   AMIT             RAM    HARSH    ASHOK
          |                                 |
        -----                            -------
        |   |                            |  |  |
How many children does Mr. TRILOK have? 
Brain Teaser No : 00604
When we speak of an unstoppable cannonball, we mean that it can't be stopped. When we speak of an immovable pole, we mean that it can't be moved by anything. What would happen if an unstoppable cannonball hit an immovable pole?
Brain Teaser No : 00031
Find sum of digits of D. 
Let 
A= 19991999 
B = sum of digits of A 
C = sum of digits of B 
D = sum of digits of C 
(HINT : A = B = C = D (mod 9)) 
Brain Teaser No : 00123A soldier looses his way in a thick jungle. At random he walks from his camp but mathematically in an interesting fashion. First he walks one mile East then half mile to North. Then 1/4 mile to West, then 1/8 mile to South and so on making a loop.Finally how far he is from his camp and in which direction? 
 Brain Teaser No : 00167 What are the chances that at least two out of a group of fifty people share the same birthday?
Brain Teaser No : 00174
Arrange five planets such that 4 of them add up to 5th planet numerically. Each of the letters of the planet should represent a unique number from the range 0 - 9. You have to use all ten digits. 
There is an amazing mathematical relationship exists among the names of the planet. 
Brain Teaser No : 00273
Eleven boys and girls wait to take their seats in the same row in a movie theater. There are exactly 11 seats in the row. They decided that after the first person sits down, the next person has to sit next to the first. The third sits next to one of the first two and so on until all eleven are seated. In other words, no person can take a seat that separates him/her from at least one other person. How many different ways can this be accomplished? Note that the first person can choose any of the 11 seats. 
Search Result 217 - 224 Total Brain teasers found 537    
 Brain Teaser No : 00408
A woman took a certain number of eggs to the market and sold some of them. The next day, through the industry of her hens, the number left over had been doubled, and she sold the same number as the previous day. On the third day the new remainder was tripled, and she sold the same number as before. On the fourth day the remainder was quadrupled, and her sales the same as before. On the fifth day what had been left over were quintupled, yet she sold exactly the same as on all the previous occasions and so disposed of her entire stock.What is the smallest number of eggs she could have taken to market the first day, and how many did she sell daily? Note that the answer is not zero.
Brain Teaser No : 00643
A, B and C are three points on a straight line, not necessarily equidistant with B being between A and C. Three semicircles are drawn on the same side of the line with AB, BC and AC as the diameters. BD is perpendicular to the line ABC, and D lies on the semicircle AC. 
If the funny shaped diagram between the three semicircles has an area of 1000 square cms, find the length of BD. 
 Brain Teaser No : 00689
Which animal is next in this sequence: Gorilla, Hedgehog, Camel, Mouse, Fox, Bear, Mole, ? 
Choose from:Porcupine, Badger, Cow, Giraffe, Squirrel, Rhinoceros Do explain your answer.
Brain Teaser No : 00052
Four words add up to a fifth word numerically:
     mars
    venus
   uranus
   saturn
 -------- +
  neptune 
Each of the ten letters (m, a, r, s, v, e, n, u, t, and p) represent a unique number from the range 0 .. 9.    Furthermore, numbers 1 and 6 are being used most frequently. 
 Brain Teaser No : 00078
PRIMAL SERIES 
Decide what the next 5 figures in this series should be:       0110101000101000101000 
 Brain Teaser No : 00275
There are two ropes. Each one can burn in exactly one hour. They are not necessarily of the same length or width as each other. They also are not of uniform width (may be thiner/wider in middle than on the end), thus burning half of the rope is not necessarily 1/2 hour. 
By burning the ropes, how do you measure exactly 45 minutes worth of time? 
Brain Teaser No : 00329
Three Gold (G) coins, three Silver (S) coins and three Copper (C) coins are arranged in a single row as follow:   G   S   C   G   S   C   G   S   C     Only 2 adjacent unlike coins can be moved at any one time.  The moved coins must be in contact with at least one other coin in line. i.e. no pair of coins is to be moved and placed away from the remaining ones.  No coin pairs can be reversed i.e. a S-C combination must remain in that order in its new positionwhen it is moved.
What is the minimum number of moves required to get all the coins in following order?
         C   C   C   S   S   S   G   G   G Show all moves. 
 Brain Teaser No : 00374 A, B, C and D are related to each other. One of the four is the opposite sex from each of the other three. D is A's brother or only daughter.  A or B is C's only son. 
B or C is D's sister. How are they related to each other? 
Search Result 225 - 232 Total Brain teasers found 537    
 Brain Teaser No : 00417
Decipher this sentence.
     H S E N   O W S J   S U D,   Z Q' T
     E R K V Z K W Z T J;   H S E N   O W S J
     Q A S,   Z Q' T   W D T D K W H P
 Brain Teaser No : 00518
Write 1111......(243 times) i.e. a 243 digit number with all 1s. Prove that it is divisible by 243.
Brain Teaser No : 00524
Last Saturday Milan went for the late night show and came late. In the morning family members asked him which movie did he see. He gave different answers to everyone. He told to his father that he had gone to see MONEY. According to his mom, he saw either JOHNY or BABLU. 
His elder brother came to know that he saw BHABI. To his sister, he told ROBOT. 
And his grandpa heard that he saw BUNNY. Thus, Milan gave six movie names, all five letter words. But he saw some other movie with five letter word. Moreover, each of the six movie names mentioned above has exactly two letters common with the movie he saw. (with the same positions) Can you tell which movie did Milan see? 
 Brain Teaser No : 00316
Decipher this sentence (Underscores represent spaces): 
IHT_OU_D_AEPPPASH
Brain Teaser No : 00358
What are next two numbers in the given series? 2, 12, 360, 75600, ?, ? 
 Brain Teaser No : 00404
At the party there were 19 females, 12 males, 14 adults and 17 children. Then I arrived and the number of different man-woman couples possible became equal to the number of boy-girl couples possible. Who am I - a man, a woman, a boy or a girl? Note that if there were 9 boys and 8 girls at the party, then there would have been 72 (9x8) boy-girl couples possible. 
 Brain Teaser No : 00433
Annie, Bunnie, Candy and Dina visited Edy on 14th February. The time of each visit was as follows:      - Annie at 8:00   - Bunnie at 9:00   - Candy at 10:00  - Dina at 11:00    Each time mentioned above may be either AM or PM.  Candy did not visit Edy between Bunnie and Dina. At least one female visited Edy between Annie and Bunnie. Annie did not visit Edy before both Candy and Dina. Can you tell at what time did they individually visit Edy? 
 Brain Teaser No : 00442
Adam, Burzin, Clark and Edmund each live in an apartment. Their apartments are arranged in a row numbered 1 to 4 from left to right. Also, one of them is the landlord.
If Clark's apartment is not next to Burzin's apartment, then the landlord is Adam and lives in apartment 1.  If Adam's apartment is right of Clark's apartment, then the landlord is Edmund and lives in apartment 4.  If Burzin's apartment is not next to Edmund's apartment, then the landlord is Clark and lives in apartment 3.  If Edmund's apartment is right of Adam's apartment, then the landlord is Burzin and lives in apartment 2. Who is the landlord? 
Search Result 233 - 240 Total Brain teasers found 537    
 Brain Teaser No : 00456
B, J and P are related to each other. Among the three are B's legal spouse, J's sibling and P's sister-in-law. B's legal spouse and J's sibling are of the same sex.Who is the married man? 
 Brain Teaser No : 00464
Find the next two numbers in the series:  1, 8, 11, 18, 80, 81, _, _ 
 Brain Teaser No : 00650
Laloo, Baloo and Naloo were at the Health Club on the same day this month.
They all joined the health club last month.  One of them goes every 2 days, another one goes every 3 days and the third one goes every 7 days.  Laloo went to the health club for the first time this month on a Monday, Baloo went to the health club for the first time this month on a Wednesday and Naloo went to the health club for the first time this month on a Friday. 
Exactly one of them was at the health club on the first day of this month. On which day of this month did Laloo, Baloo and Naloo meet? Note that here "this month" means any one month in general. 
 Brain Teaser No : 00016
At what time after 4.00 p.m. is the minutes hand of a clock exactly aligned with the hour hand? 
Brain Teaser No : 00036
A number of 9 digits has the following properties: The number comprising the leftmost two digits is divisible by 2, that comprising the leftmost three digits is divisible by 3, the leftmost four by 4, the leftmost five by 5, and so on for the nine digits of the number i.e. the number formed from the first n digits is divisible by n, 2<=n<=9. Each digit in the number is different i.e. no digits are repeated. The digit 0 does not occur in the number i.e. it is comprised only of the digits 1-9 in some order.Find the number. 
 Brain Teaser No : 00038 The population of an island consists of two and only two types of people : the knights, who invariably tell the truth and the knaves who always lie. three of the inhabitants called X, Y and Z were standing together. A newcomer to the island asked, "Are you a knight or a knave?" X mumbled his answer rather indistinctly, so the stranger could not quite make out what he had said. The stranger than asked Y, "What did X say?" Y replied, "X said that he was a knave." Whereupon Z said, "Don't believe Y, he's lying." What are Y and Z? Suppose that the stranger asked X, instead, "How many knights among you?" Again X replies indistinctly. So the stranger asks Y, "What did X say?" Y replies, "X said that there is one knight among us." Then Z says, "Don't believe Y, he is lying!" Now what are Y and Z? There are only two inhabitants, X and Y. X says, "At least one of us is a knave." What are X and Y? Suppose X says, "Either I am a knave, or Y is a knight?" What are X and Y? Consider once more X, Y and Z each of who is either a knight or a knave. X says, "All of us are knaves." Y says, "Exactly one of us is a knight." What are X, Y and Z?
 Brain Teaser No : 00127    Grass in lawn grows equally thick and in a uniform rate. It takes 24 days for 70 cows and 60 days for 30 cows to eat the whole of the grass.  How many cows are needed to eat the grass in 96 days? 
 Brain Teaser No : 00150
What are the next two letters in this sequence?  A, B, H, F, M, C, I, G, T, D, O, ?, ? 
Search Result 241 - 248 Total Brain teasers found 537    
 Brain Teaser No : 00271
Substitute digits for the letters to make the following Division true
                   O U T
           -------------
   S T E M | D E M I S E
           | D M O C
           -------------
               T U I S
               S T E M
              ----------
                 Z Z Z E
                 Z U M M
                --------
                   I S T
Note that the leftmost letter can't be zero in any word. Also, there must be a one-to-one mapping between digits and letters. e.g. if you substitute 3 for the letter M, no other letter can be 3 and all other M in the puzzle must be 3.
Brain Teaser No : 00590  You are locked inside a room with 6 doors - A, B, C, D, E, F. Out of which 3 are Entrances only and 3 are Exits only.  One person came in through door F and two minutes later second person came in through door A. He said, "You will be set free, if you pass through all 6 doors, each door once only and in correct order. Also, door A must be followed by door B or E, door B by C or E, door C by D or F, door D by A or F, door E by B or D and door F by C or D." After saying that they both left through door B and unlocked all doors. In which order must you pass through the doors? 
 Brain Teaser No : 00800
There are 4 mathematicians - Brahma, Sachin, Prashant and Nakul - having lunch in a hotel. Suddenly, Brahma thinks of 2 integer numbers greater than 1 and says, "The sum of the numbers is..." and he whispers the sum to Sachin. Then he says, "The product of the numbers is..." and he whispers the product to Prashant. After that following conversation takes place : 
Sachin : Prashant, I don't think that we know the numbers. 
Prashant : Aha!, now I know the numbers. 
Sachin : Oh, now I also know the numbers. 
Nakul : Now, I also know the numbers. 
What are the numbers? Explain your answer.
Brain Teaser No : 00151   Assume that you have enough coins of 1, 5, 10, 25 and 50 cents. 
How many ways are there to make change for a dollar? Do explain your answer. 
 Brain Teaser No : 00203  Do you know the missing number in the given series? 
10, 11, 12, 13, 14, 15, 16, 17, 20, 22, 24, ___ , 100, 121, 10000 
Brain Teaser No : 00267  A stick of length 1 is divided randomly into 3 parts. 
What is the probability that a triangle can be made with those three parts? 
 Brain Teaser No : 00420
Examine the following sequence of numbers. 
1 
11 
21 
1211 
111221 
312211 
13112221 
1113213211 
31131211131221 
What are the next two numbers in the given series? 
Brain Teaser No : 00457
A series comprising of numbers contains only ten digits. The first eight digits in the given series are 6, 2, 5, 5, 4, 5, 6, 3  Can you find out the remaining two digits? 
   Search Result 249 - 256 Total Brain teasers found 537    
 Brain Teaser No : 00474
Given any whole number take the sum of the digits, and the product of the digits, and multiply these together to get a new whole number.  For example, starting with 6712, the sum of the digits is (6+7+1+2) = 16, and the product of the digits is (6*7*1*2) = 84. The answer in this case is then 84 x 16 = 1344. If we do this again starting from 1344, we get (1+3+4+4) * (1*3*4*4) = 576 
And yet again (5+7+6) * (5*7*6) = 3780  At this stage we know what the next answer will be (without working it out) because, as one digit is 0, the product of the digits will be 0, and hence the answer will also be 0. Can you find any numbers to which when we apply the above mentioned rule repeatedly, we never end up at 0? 
 Brain Teaser No : 00511
Substitute digits for the letters to make the following addition problem true.
                        O  N  E
                     N  I  N  E
               T  W  E  N  T  Y
            +     F  I  F  T  Y
            -------------------
               E  I  G  H  T  Y
Note that the leftmost letter can't be zero in any word. Also, there must be a one-to-one mapping between digits and letters. e.g. if you substitute 3 for the letter Y, no other letter can be 3 and all other Y in the puzzle must be 3. 
Brain Teaser No : 00655
Substitute digits for the letters to make the following addition problem true.
                  T  H  A  T  S
                        T  H  E
           +   T  H  E  O  R  Y
           ---------------------
               A  N  Y  W  A  Y
Note that the leftmost letter can't be zero in any word. Also, there must be a one-to-one mapping between digits and letters. e.g. if you substitute 3 for the letter Y, no other letter can be 3 and all other Y in the puzzle must be 3. 
 Brain Teaser No : 00002
Ali Baba had four sons, to whom he bequeathed his 39 camels, with the proviso that the legacy be divided in the following way : The oldest son was to receive one half the property, the next a quarter, the third an eighth and the youngest one tenth. The four brothers were at a loss as how to divide the inheritance among themselves without cutting up a camel, until a stranger appeared upon the scene. Dismounting from his camel, he asked if he might help, for he knew just what to do. The brothers gratefully accepted his offer. Adding his own camel to Ali Baba's 39, he divided the 40 as per the will. The oldest son received 20, the next 10, the third 5 and the youngest 4. One camel remained : this was his, which he mounted and rode away. 
Scratching their heads in amazement, they started calculating. The oldest thought : is not 20 greater than the half of 39? Someone must have received less than his proper share ! But each brother discovered that he had received more than his due. How is it possible? 
Brain Teaser No : 00242
There is a shortage of tubelights, bulbs and fans in a village - Kharghar. It is found that 
All houses do not have either tubelight or bulb or fan. 
exactly 19% of houses do not have just one of these. 
atleast 67% of houses do not have tubelights. 
atleast 83% of houses do not have bulbs. 
atleast 73% of houses do not have fans.
What percentage of houses do not have tubelight, bulb and fan? 
Brain Teaser No : 00258
Three convicts are brought into the warden's office. He says he can parole one of them and to decide which one he will parole he takes out 5 hats (3 red and 2 white). He stands behind them and places a hat on each one of their heads and puts the other two remaining hats in a drawer. 
He tells the prisioners they can look at the others hats and if they can tell which hat they have on they will be the one who is paroled.  The first man looks at the other two and says, "I don't know." 
The second man looks at the others hats and says, "I don't know."  The third man who is blind says, "Even though I have not the gift of sight I can tell by what the others have said that the color of my hat is..."  What color is the blind mans hat and how does he know?
Brain Teaser No : 00265
There are 4 blocks each with 6 sides. Each side has a letter from the alphabet. No letters are ever repeated. By arranging the blocks in different ways they spell all the words listed below: 
BODY, MAZE, CURT, MOVE, DRAW, NOTE, FEAR, PICK, HUNT, QUIT, JOKE, SNOB, KNEW, TYPE, LIFE  Can you figue out how the letters are arranged on the 4 blocks?
Brain Teaser No : 00322
               S L I D E
             -   D E A N
               ---------
                 3 6 5 1
Each of seven digits from 0-9 are represented by a different letter above such that the subtraction is true. What word represents 3651? 
Search Result 257 - 264 Total Brain teasers found 537    
 Brain Teaser No : 00340
Find the next in the set:    AZFR, LARU, AMAS, SBNS, KICI, ????
Brain Teaser No : 00500
What is the next number in the given series?   0, 01, 01011, 0101101011011, ? 
 Brain Teaser No : 00683 If a rook and a bishop of a standard chess set are randomly placed on a chessboard, what is the probability that one is attacking the other? 
Note that both are different colored pieces.
Brain Teaser No : 00028
There are 10 boxes containing 10 balls each. 9 boxes contain 10 balls of 10 kg each and one box contains 10 balls of 9 kg each. Tool is available for proper weighing. How can you find out the box containing 9 kg balls?  You are allowed to weigh only once. You can remove balls from the boxes. All balls are of same size and color. 
 Brain Teaser No : 00087
Find the next number in the series 11 12 20 23 33 46 ..... 
Brain Teaser No : 00119
Next number in the series is 1, 2, 4, 13, 31, 112, ? 
Brain Teaser No : 00164
Substitute digits for the letters to make the following relation true.
                  W O R L D
               +  T R A D E
               -------------
                C E N T E R
Note that the leftmost letter can't be zero in any word. Also, there must be a one-to-one mapping between digits and letters. e.g. if you substitute 3 for the letter W, no other letter can be 3 and all other W in the puzzle must be 3. 
Brain Teaser No : 00256                Find the next two numbers in the given series. 0 2 3 4 5 5 7 6 6 7 11 7 13 9 8 8 17 8 19 9 10 13 23 ? ? 
Search Result 265 - 272 Total Brain teasers found 537    
 Brain Teaser No : 00299
Substitute digits for the letters to make the following Division true
                  Y F Y 
             -----------
        A Y | N E L L Y
            | N L Y
        ----------------
                P P L
                P N H
              ----------
                  N L Y
                  N L Y
              ----------
                  0 0 0
Note that the leftmost letter can't be zero in any word. Also, there must be a one-to-one mapping between digits and letters. e.g. if you substitute 3 for the letter N, no other letter can be 3 and all other N in the puzzle must be 3.
Brain Teaser No : 00302  There are 20 people in your applicant pool, including 5 pairs of identical twins. If you hire 5 people randomly, what are the chances you will hire at least 1 pair of identical twins? (Needless to say, this could cause trouble ;))
Brain Teaser No : 00403
There are N secret agents each know a different piece of secret information. They can telephone each other and exchange all the information they know. After the telephone call, they both know anything that either of them knew before the call.  What are the minimum number of telephone calls needed so that all of the them know everything? 
 Brain Teaser No : 00105
A man is on a search for Atlantis and comes upon an island where all the inhabitants know whether Atlantis is still around or not.  However, all of the inhabitants are either Fairies or Trolls and they all use a spell to appear humanoid so you cannot tell which is which. And the Faries always tell the truth and the Trolls always lie, but there is a slight complication, some of the Fairies have gone insane and always lie and some of the Trolls have also gone insane and always tell the truth. So here is your task: you must ask the first inhabitant that you come to ONE question and from that ONE question you must determine wether Atlantis is still around or not. 
What is the question that you must ask? 
Brain Teaser No : 00168
Chintu put some Black marbles and some White marbles into a jar. He then asked his brother Pintu to take out a marble. Pintu drew out a Black marble. Chintu asked Pintu to draw out another marble, and again he drew out a Black marble.  Pintu thought there must be more Black marbles than White marbles in the jar and asked Chintu, "I wonder what is the probability of me drawing a Black marble on a third try?" Chintu replied, "Exactly 9/10 of what it was of drawing a Black marble on your first draw." Can you help Pintu to determine how many marbles of each colour had been in the jar in the beginning? Give the minimal possible answer. Also, Pintu knew that there were at least seven marbles in the jar in the beginning. 
 Brain Teaser No : 00212 What can run but never walks,   Has a mouth but never talks, 
Has a head but never weeps,Has a bed but never sleeps? 
Brain Teaser No : 00324
You have just built a house. However, you may only take certain items into the house. You can take doors, but you aren't allowed any windows. You can't have, but you are allowed coffee. A book is okay, but no paper. Finally, you can take a puppy or kitten, but you can't take a dog or cat. Give one more thing that you can/can't take, and explain why.
Brain Teaser No : 00409
You have 3 points labelled A, B and C. You then have another 3 points labelled 1, 2 and 3. The aim of the puzzle is to connect point A with point 1, 2 and 3. Point B with point 1, 2 and 3 and point C with point 1, 2 and 3.  Now while connecting the points you have to follow one rule - the lines cannot cross over each other. 
       A           B           C
       1           2           3
PS : You can arrange the points in order as long as the lines DO NOT cross over each other.
Search Result 273 - 280 Total Brain teasers found 537    
 Brain Teaser No : 00463 My uncle married a woman about three years ago, but I've never had an aunt. How is that possible?
 Brain Teaser No : 00490
In a room, there are 100 bulbs numbered from 1 to 100. Initially, all of them are OFF. 
Mr. Irfan changes the status of bulb 1 and all the other bulbs which are numbered as integer multiple of 1 i.e. if bulb is ON, then he switches it OFF and vice-versa. After that, he changes the status of bulb 2 and all the other bulbs which are numbered as integer multiple of 2. (i.e. 2, 4, 6, 8, ...) Then he changes the status of bulb 3 and all the other bulbs which are numbered as integer multiple of 3. (i.e. 3, 6, 9, 12, ...) Mr. Irfan repeats the process for all the numbers till 100. 
Can you tell which bulbs will be ON at the end? 
Brain Teaser No : 00765
Three men, including Gianni and three woman, including Sachi are in line at the BrentWood post office. Each has two different pieces of business to conduct. The first person is a woman. 
Carlos wants to send an overnight package. Lau is just ahead of Pimentelli who is the same sex as Lau. Gianni is two places ahead of the person who wants to buy stamps. Knutson - who is the opposite sex than Rendler - isn't the person who wanted to complain about a mail carrier. 
The six people, not necessarily in the same order are - Anthony, Donna, the person who wants to fill out a change-of-address form, the one who wants to buy a money order, the one who wants to send Airmail to Tibet and the second person in the line. 
The four tasks of the last two people in line, not necessarily in the same order are - sending books fourth class, buying a money order, picking up a package and complaining about a mail carrier.  The person who wants to send books fourth class is just behind a person of the same sex. Mary is just behind a person who wants to send an insured package. 
The person who wants to send Airmail to Tibet is either two places ahead of or two places behind the one who wants to add postage to his or her meter.  Anthony isn't two places behind the who wants to pickup a registered letter.  Toriseza is two places ahead of the person who wants to pick up a package.  Knutson isn't just ahead of the person who wants to send an item parcel post.
Can you figure out where each customer is in the line, his or her full name (one surname is Loti) and the two things he or she wants to accomplish? Provide your answer is POSITION - FIRST NAME - LAST NAME - BUSINESS format. 
 Brain Teaser No : 00223
A professor went to a Museum of Natural History. She saw the following five exhibits :
A prehistoric arrowhead made of copper. The fossil skeleton of a dinosaur no bigger than a chicken. An ancient Roman coin marked 120 B.C.  A red diamond ring. 
An ancient Egyptian cat mummy.The professor knew one of these is fake. Do you?
Brain Teaser No : 00335
Two women, X and Y, were selling Oranges in the market. X were selling 3 oranges for a Rupee and Y were selling 2 oranges for a Rupee.  One day each of them had 30 oranges unsold. They put together the two lots of oranges and decided to sell 5 oranges for Rs. 2. According to their calculation, 3 oranges for Rs. 1 and 2 oranges for Rs. 1 was exactly the same as 5 oranges for Rs. 2 Now, they were expecting to get Rs. 25 for the oranges, as they would have got, if sold separately. But to their surprise they got only Rs. 24 for the entire lot of the 60 oranges. 
Where did the one rupee go? 
Brain Teaser No : 00510
Substitute digits for the letters to make the following addition problem true.
               W  H  O  S  E
               T  E  E  T  H
                     A  R  E
          +             A  S
          -------------------
            S  W  O  R  D  S
Note that the leftmost letter can't be zero in any word. Also, there must be a one-to-one mapping between digits and letters. e.g. if you substitute 3 for the letter H, no other letter can be 3 and all other H in the puzzle must be 3. 
Brain Teaser No : 00528
Substitute digits for the letters to make the following relation true.
               N  E  V  E  R
               L  E  A  V  E
            +           M  E
            -----------------
               A  L  O  N  E
Note that the leftmost letter can't be zero in any word. Also, there must be a one-to-one mapping between digits and letters. e.g. if you substitute 3 for the letter M, no other letter can be 3 and all other M in the puzzle must be 3. 
Brain Teaser No : 00637
There is a cup with water and ice in it.  Will the water level change if the ice melts?
   Search Result 281 - 288 Total Brain teasers found 537    
 Brain Teaser No : 00651
No legs do I have to dance   No lungs do I have to breath 
No life do I have to live or die And yet I live.   What am I?
Brain Teaser No : 00688     They call me a man, but I'll never have a wife.  I was given a body, but not given life. They made me a mouth, but didn't give me breath. Water gives me life and sun brings me death. What am I?
Brain Teaser No : 00807
How many possible combinations are there in a 3x3x3 rubics cube?  In other words, if you wanted to solve the rubics cube by trying different combinations, how many might it take you (worst case senerio)? How many for a 4x4x4 cube?
Brain Teaser No : 00092
Below is a Quiz written by Einstein in the lst century.  He said 98% of the people in the world cannot solve the quiz. Are you among the other 2%? FACTS There are 5 houses in 5 different colors. In each house lives a person with a different nationality.  These 5 owners drink a certain beverage, smoke a certain brand of cigar and keep a certain pet .No owners have the same pet, smoke the same brand of cigar or drink the same drink.
HINTS
The Brit lives in a red house.   The Swede keeps dogs as pets.   The Dane drinks tea. The green house is on the immediate left of the white house.  The green house owner drinks coffee. 
The person who smokes Pall Mall rears birds. 
The owner of the yellow house smokes Dunhill. 
The man living in the house right in the center drinks milk. 
The Norwegian lives in the first house. 
The man who smokes blend lives next to the one who keeps cats. 
The man who keeps horses lives next to the man who smokes Dunhill. 
The owner who smokes Blue Master drinks beer. 
The German smokes Prince. 
The Norwegian lives next to the Blue House.  The man who smokes blend has a neighbor who drinks water. THE QUESTION IS....WHO KEEPS FISH? There is no trick to this - it needs deductive reasoning and definitely a pen and paper. 
 Brain Teaser No : 00133
Five students - Akash, Chintan, Jignesh, Mukund and Venky - appeared for an exam. There were total five questions - two multiple choice (a, b or c) and three true/false questions. They answered five questions each and answered as follow.
                I    II     III      IV      V 
 --------------------------------------------------
   Chintan      c    b     True     True    False 
   Akash        c    c     True     True    True 
   Jignesh      a    c     False    True    True 
   Mukund       b    a     True     True    False 
   Venky        b    b     True     False   True 
 --------------------------------------------------
Also, no two students got the same number of correct answers.  Can you tell which are the correct answers? What are their individual score? 
 Brain Teaser No : 00281
On Sunday, December 22, four ships - W, X, Y, Z - started their series of winter cruises to various ports. Ship W left at 4:00 PM on Sunday, December 22, for a series of 8-days cruises to Mandva. 
Ship X left at 4:30 PM on Sunday, December 22, for a series of alternating 11-days and 13-days cruises to Alibaug.  Ship Y left at 5:00 PM on Sunday, December 22, for a series of 5-days cruises to Khihim. Ship Z left on Monday for a series of 7-days cruises. Each ship is scheduled to return back early in the morning after the last day of the cruise and leave again late in the afternoon of the same day. On how many days occasions between December 22 and February 28 will three ships be moored at the port? 
 Brain Teaser No : 00348
There are 10 statements written on a piece of paper:  At least one of statements 9 and 10 is true. 
This either is the first true or the first false statement.  There are three consecutive statements, which are false. The difference between the numbers of the last true and the first true statement divides the number, that is to be found.  The sum of the numbers of the true statements is the number, that is to be found. This is not the last true statement.  The number of each true statement divides the number, that is to be found. The number that is to be found is the percentage of true statements. The number of divisors of the number, that is to be found, (apart from 1 and itself) is greater than the sum of the numbers of the true statements. 
There are no three consecutive true statements.  Find the minimal possible number?
Brain Teaser No : 00355
Montu, Bantu, Chantu and Pintu have pets. 
Montu says, "If Pintu and I each have a dog, then exactly one of Bantu and Chantu has a dog." 
Bantu says, "If Chantu and I each have a cat, then exactly one of Montu and Pintu has a dog." 
Chantu says, "If Montu and I each have a dog, then exactly one of Bantu and Pintu has a cat." 
Pintu says, "If Bantu and I each have a cat, then exactly one of Bantu and I has a dog." 
Only one of the four is telling the truth. Who is telling the truth? 
   Search Result 289 - 296 Total Brain teasers found 537    
 Brain Teaser No : 00432
Tanya wants to go on a date and prefers her date to be tall, dark and handsome.
Of the preferred traits - tall, dark and handsome - no two of Adam, Bond, Cruz and Dumbo have the same number. Only Adam or Dumbo is tall and fair. Only Bond or Cruz is short and handsome. Adam and Cruz are either both tall or both short. 
Bond and Dumbo are either both dark or both fair. Who is Tanya's date? 
 Brain Teaser No : 00546
Ankit and Tejas divided a bag of Apples between them. 
Tejas said, "It's not fair! You have 3 times as many Apples I have." Ankit said, "OK, I will give you one Apple for each year of your age." Tejas replied, "Still not fair. Now, you have twice as many Apples as I have." "Dear, that's fair enough as I am twice older than you.", said Ankit. 
Ankit went to Kitchen to drink water. While Ankit was in Kitchen, Tejas took apples from Ankit's pile equal to Ankit's age.  Who have more apples now? 
 Brain Teaser No : 00562
Mr. Subramaniam rents a private car for Andheri-Colaba-Andheri trip. It costs him Rs. 300 everyday.  One day the car driver informed Mr. Subramaniam that there were two students from Bandra who wished to go from Bandra to Colaba and back to Bandra. Bandra is halfway between Andheri and Colaba. Mr. Subramaniam asked the driver to let the students travel with him. 
On the first day when they came, Mr. Subramaniam said, "If you tell me the mathematically correct price you should pay individually for your portion of the trip, I will let you travel for free." 
How much should the individual student pay for their journey? 
Brain Teaser No : 00161
Mr. D'souza has bought four cars - Merc, Honda, Ford, Zen - as presents for his sons' birthdays, all of which are next week. Given the following information, what will each son get? Alan will not get the Honda unless Barry gets the Merc and Denzil gets the Ford. Barry will not get the Ford unless Carl gets the Zen and Alan gets the Merc. Denzil will not get the Zen unless Alan gets the Honda and Barry gets the Merc. Alan will not get the Merc unless Carl gets the Zen and Denzil gets the Ford. Barry will not get the Merc unless Alan gets the Zen and Denzil gets the Ford. Alan will not get the Zen unless Barry gets the Honda and Carl gets the Merc. Carl will not get the Zen unless Barry gets the Honda and Alan gets the Ford. Alan will not get the Ford unless Barry gets the Zen and Denzil gets the Honda. Carl will not get the Merc unless Denzil gets the Honda. 
 Brain Teaser No : 00254
One of the four people - Mr. Clinton, his wife Monika, their son Mandy and their daughter Cindy - is a singer and another is a dancer. Mr. Clinton is older than his wife and Mady is older than his sister.If the singer and the dancer are the same sex, then the dancer is older than the singer. 

If neither the singer nor the dancer is the parent of the other, then the singer is older than the dancer.  If the singer is a man, then the singer and the dancer are the same age. 
If the singer and the dancer are of opposite sex then the man is older than the woman. 
If the dancer is a woman, then the dancer is older than the singer. Whose occupation do you know? And what is his/her occupation? 
 Brain Teaser No : 00393  Which of the following day(s) can't be the last day of a century? 
Sunday, Monday, Tuesday, Wednesday, Thursday, Friday, Saturday  Justify your answer. 
 Brain Teaser No : 00428
Mr. X wants to send Diamond Necklace to his fiancee Y who lives in some other country. Mr. X puts the Diamond Necklace inside a box to parcel. Note that: 
The parcel must be locked.  The box is made up of such a material that nobody can break it. 
The box has a handle large enough to put a lock on it.Mr. X can not send a key with the parcel. Combination locks and telephones are not available. How will Mr. X send Diamond Necklace to his fiancee Y? 
 Brain Teaser No : 00450
Yesterday in a party, I asked Mr. Shah his birthday. With a mischievous glint in his eyes he replied. "The day before yesterday I was 83 years old and next year I will be 86." 
Can you figure out what is the Date of Birth of Mr. Shah? Assume that the current year is 2000. 
Search Result 297 - 304 Total Brain teasers found 537    
 Brain Teaser No : 00552 A cricket team of 11 players lined up in a straight line to have their photograph. The captain was asked to stand in the center of the line-up. 
1) Bharat and Bhavin stood to the right of the captain 
2) Two players stood between Bhagat and Bhairav 
3) Seven players stood between Bhadrik and Bhanu 
4) Bhavesh stood to the right of Bhuvan 
5) Bhola and Bhumit stood either side of Bhagat 
6) Bhavik and Bhumit stood to the left of the captain 
7) Six players stood between Bhavin and Bhagat 
8) Two players stood between Bhagat and Bhavik 
Who is the captain? Can you tell the positions of all the palyers? 
Brain Teaser No : 00737
Consider a game of Tower of Hanoi (like the one that you can play on BrainVista). 
If the tower has 2 discs, the least possible moves with which you can move the entire tower to another peg is 3.  If the tower has 3 discs, the least possible moves with which you can move the entire tower to another peg is 7.  What is the least possible moves with which you can move the entire tower to another peg if the tower has N discs?
Brain Teaser No : 00854
In the middle of the confounded desert, there is the lost city of "Ash". To reach it, I will have to travel overland by foot from the coast. On a trek like this, each person can only carry enough rations for five days and the farthest we can travel in one day is 30 miles. Also, the city is 120 miles from the starting point.  What I am trying to figure out is the fewest number of persons, including myself, that I will need in our Group so that I can reach the city, stay overnight, and then return to the coast without running out of supplies.  How many persons (including myself) will I need to accomplish this mission? 
 Brain Teaser No : 00286
 There are 4 army men. They have been captured by a rebel group and have been held at ransom. An army intelligent officer orders them to be burried deep in dirt up to their necks. The format of their burrial are as shown in the figure.    Conditions 
They each have hats on their heads. either black(b) or white (w) look at diagram above. There are total 2 white hats and 2 black hats.They only look in front of them not behind. They are not allowed to communicate by talking. Between army man 1 and 2, there is a wall. 
Captive man 4 can see the colour of hats on 2 and 3   3 can only see 2's hat 
2 can only see a wall and 1 can see a wall too, but is on the other side
The officer speaks up, "If one of you can correctly tell me the colour of your hat, you will all go scott free back to your contries. If you are wrong, you will all be killed. 

How can one of them be certain about the hat they are wearing and not risk the lives of their fellow souldiers by taking a 50/50 guess!
Brain Teaser No : 00288
Five friends with surname Batliwala, Pocketwala, Talawala, Chunawala and Natakwala have their first name and middle name as follow. Four of them have a first and middle name of Paresh. 
Three of them have a first and middle name of Kamlesh. 
Two of them have a first and middle name of Naresh. 
One of them have a first and middle name of Elesh. 
Pocketwala and Talawala, either both are named Kamlesh or neither is named Kamlesh. 
Either Batliwala and Pocketwala both are named Naresh or Talawala and Chunawala both are named Naresh.  Chunawala and Natakwala are not both named Paresh.
Who is named Elesh? 
 Brain Teaser No : 00384
I was sitting around with my friend Dave, Marty and James recently. I happened to have two tickets to a new movie in my pocket that I had just purchased.  I mentioned that there were two four-digit numbers on the tickets and that the sum of all 8 digits was 25.  Dave asked if any digit appeared more out of the 8, which I answered. Then, Marty asked if the sum of the digits of either ticket was equal to 13, which I answered too. Much to my surprise James immediately told me what the two numbers were! What were they? 
 Brain Teaser No : 00468
A blindfolded man is asked to sit in the front of a carrom board. The holes of the board are shut with lids in random order, i.e. any number of all the four holes can be shut or open. Now the man is supposed to touch any two holes at a time and can do the following.Open the closed hole. 
Close the open hole.  Let the hole be as it is.  After he has done it, the carrom board is rotated and again brought to some position. The man is again not aware of what are the holes which are open or closed.  How many minimum number of turns does the blindfolded man require to either open all the holes or close all the holes? Note that whenever all the holes are either open or close, there will be an alarm so that the blindfolded man will know that he has won.
 Brain Teaser No : 00504
There is a Tibetan monastery filled with a number of monks. The number of monks is more than one, and not unreasonably large. God visits the monks one night and tells them that he is planning on destroying the world unless they can solve a puzzle. He puts a red dot on the foreheads of a certain number of monks, X. X is greater than zero. Then he takes away all means of communication between the monks, and all means by which the monks can see themselves. No mirrors, no hand signals, no nothing. A single monk can see all the other monks, and see if another monk has a dot on his head or no, but he cannot see himself, and he cannot communicate in any way with any other monk. God then says that all of the monks with dots, and only those monks with dots, must jump off of the cliff next to the monastery and sacrifice themselves to save the world, at EXACTLY the same moment, on EXACTLY the same day. 
The next morning, all of the monks from the monastery walk out to the edge of the cliff. They pause and look around, and then walk quickly back to the monastery. 
The second morning, all of the monks from the monastery walk to the edge of the cliff. They pause, look, and walk back to the monastery. The third morning, all of the monks walk to the edge of the cliff. And then all of the monks with dots, and only those monks with dots walk to the cliff edge and jump off at the exact same moment. The question: how many monks jumped, and how did they organize the jump?
Search Result 305 - 312 Total Brain teasers found 537    
 Brain Teaser No : 00675 Elizabeth is engaged. Her fiancé is either Arthur, Barry, Colin or Derek. 
Each of the four men and Elizabeth either always tells the truth or always lies.Arthur says: "Exactly one of us four men always tells the truth."  Barry says: "Exactly one of us four men always tells the lies." Colin says: "Arthur or Barry is Elizabeth's fiancé."  Elizabeth says: "My fiancé and I either both always tell truth or both always lie."Who is Elizabeth's fiancé? 
Brain Teaser No : 00020
Multiply by 7 the number of 8's immediately followed by 3, but not by 5, in the number below: 
381654783298514285838385737983256941837408326 
Brain Teaser No : 00098
Imagine that you have 26 constants, labelled A through Z. Each constant is assigned a value in the following way: A = 1; the rest of the values equal their position in the alphabet (B corresponds to the second position so it equals 2, C = 3, etc.) raised to the power of the preceeding constant value. So, B = 2 ^ (A's value), or B = 2^1 = 2. C = 3^2 = 9. D = 4^9, etc. 
Find the exact numerical value to the following equation: (X - A) * (X - B) * (X - C) * ... * (X - Y) * (X - Z) 
 Brain Teaser No : 00260 If three babies are born every second of the day, then how many babies will be born in the year 2001?
Brain Teaser No : 00268   How many ways are there of arranging the sixteen black or white pieces of a standard international chess set on the first two rows of the board? Given that each pawn is identical and each rook, knight and bishop is identical to its pair.
Brain Teaser No : 00284
While sitting in a club where all single men tell the truth and all married men lie, a woman is approached by three men.  She asks the first guy if he is married, but the music is so loud that she can not hear his answer.  So she turns to the second guy, who tells her, "The first guy said, 'I am married', but he is really single."  Then she turns to the third guy, who says, "The second guy is single." Can you determine the marital status of each of the three men?
Brain Teaser No : 00285
Five executives of a Cultural Committee hold a conference in Mumbai. 
Mr. A converses in English and Marathi.  Mr. B converses in Hindi and English. 
Mr. C converses in Marathi and Hindi. Mr. D converses in Hindi and Gujarati. 
Mr. E, a native Marathi, can also converse in Gujarati. 
If a sixth executive is brought in, to be understood by the maximum number of the original five, he should be fluent in which 2 languages? 
Brain Teaser No : 00349
In order to conduct the work at store it is necessary to have a minimum of three workers each day. The staff consists of five persons who work on part time basis. Alice can work on Mondays, Wednesdays and Fridays. Betty cannot report for work on Wednesdays. Carol can report for work on Tuesdays and Wednesdays only. Dorothy cannot work on Fridays. Emmy is available anytime except on the first Monday and Thursday of the month.  During which day of the week, might it be impossible to conduct the work at store? Note that the store remains close on Sundays. 
Search Result 313 - 320 Total Brain teasers found 537    
 Brain Teaser No : 00669
Anna, her brother - Andre, her daughter - Ami, and her son, Adam are tennis players. As a game of doubles Anna's brother is directly across the net from Ami.  Adam is diagonally across the net from the worst player's sibling. The best player and the worst player are on the same side of the 
net.Who is the best player? 
 Brain Teaser No : 00043
Professors Ahmad and Joshi are extremely strange persons. 
Prof. Ahmad lies on Mondays, Tuesdays and Wednesdays, but tells true on other days of the week. 
Prof. Joshi lies on Thursdays, Fridays and Saturdays, but tells true on other days of the week. 
They made the following statements: 
Prof. Ahmad : "Yesterday was one of my lying days." 
Prof. Joshi : "Yesterday was one of my lying days too." 
What day of the week was it?
Both Professors looked very alike and one day they said to a visitor to their department : 
First Prof: "I'm Ahmed." Second Prof: "I'm Joshi." Who was who? What day of the week was it?
On another occasion, both Professors made the following statements: 
First Prof : 1. "I lie on Saturdays." 
2. "I lie on Sundays."   Second Prof. : "I will lie tomorrow."  What day of the week was it?
There are six boxes containing 5, 7, 14, 16, 18, 29 balls of either red or blue in colour. Some boxes contain only red balls and others contain only blue. 
One sales man sold one box out of them and then he says, "I have the same number of red balls left out as that of blue."  Which box is the one he solds out? 
 Brain Teaser No : 00134  What is greater then GOD, worse then devil, dead men eat it and live men will die if they eat it?
Brain Teaser No : 00145
A Father asks his son to go shopping for apples one day. He gives his son exactly 100 pence and instructs that he must spend all of it and buy exactly 100 apples from the market. 
The market sells three kinds of apples. Good apples are priced at 10 pence, Average apples at 5 pence and Rotten apples at 0.5 pence.  It does not matter what type of apples the boy buys. How many of each apple must the boy buy in order to fulfil his father's instructions.
Brain Teaser No : 00156
 The game of Tic-Tac-Toe is being played between two players. Only the last mark to be placed in the game as shown.  Who will win the game, O or X? Can you tell which was the sixth mark and at which position? Do explain your answer.  Assume that both the players are intelligent enough.
 Brain Teaser No : 00157
Can you decode the following Cryptogram?
     Y Z U O    R L D U O    O Z K X R
     Y V W Q G    C V W    U O O D J F O
     K N    C V W    S X D Y    K O    Y U T
     K J F V T T K A Q D    O V    N U K Q ?
Brain Teaser No : 00158  Consider the sum: ABC + DEF + GHI = JJJ  If different letters represent different digits, and there are no leading zeros, what does J represent? 
   Search Result 321 - 328 Total Brain teasers found 537    
 Brain Teaser No : 00574 Major Jasbir is forming five-person Special Task Group. The group must contain one leader, two bomb-experts and two soldiers.  P, Q and R are possible bomb-experts. R, S and T are possible leaders. U, V and W are possible soldiers. Also, P and R prefers to work with each other in the same team. T prefers to work only if V works. 
How many different possible Groups, Major Jasbir can make? 
Brain Teaser No : 00023
There is a grid of 20 squares by 10 squares. How many different rectangles are possible? 
Note that square is a rectangle. 
Brain Teaser No : 00088
Find the values of each of the alphabets.
            N O O N
            S O O N
         +  M O O N
         ----------
            J U N E
Brain Teaser No : 00159
Each of the five characters in the word BRAIN has a different value between 0 and 9. Using the given grid, can you find out the value of each character?
        B   R   A   I   N   31
        B   B   R   B   A   31
        N   I   A   B   B   32
        N   I   B   A   I   30
        I   R   A   A   A   23
       37  29  25  27  29
The numbers on the extreme right represent the sum of the values represented by the characters in that row. Also, the numbers on the last raw represent the sum of the values represented by the characters in that column. e.g. B + R + A + I + N = 31 (from first row) 
Brain Teaser No : 00193
If one person sends the e-mail to two friends, asking each of them to copy the mail and send it to two of their friends, those in turn send it to two of their friends and so on. 
How many e-mails would have been sent by the time it did 30 sets? 
Brain Teaser No : 00217 Jim lies a lot. He tells the truth on only one day in a week. 
One day he said: "I lie on Mondays and Tuesdays." The next day he said: "Today is either Sunday, Saturday or Thursday." The next day he said: "I lie on Fridays and Wednesdays." On which day of the week does Jim tell the truth? 
 Brain Teaser No : 00434 What are the next three numbers in the given series? 
1 1 2 1 2 2 3 1 2 2 3 2 3 3 4 1 2 2 3 2 3 3 4 2 3 3 ? 
 Brain Teaser No : 00455     Find the remainder of (2^n)/n
Search Result 329 - 336 Total Brain teasers found 537    
 Brain Teaser No : 00477
Suppose five bales of hay are weighed two at a time in all possible ways. The weights in pounds are 110, 112, 113, 114, 115, 116, 117, 118, 120, and 121. How much does each bale weigh?
Brain Teaser No : 00008 3 blocks are chosen randomly on a chessboard. What is the probability that they are in the same diagonal? 
 Brain Teaser No : 00035 In a sports contest there were m medals awarded on n successive days (n > 1). On the first day 1 medal and 1/7 of the remaining m - 1 medals were awarded. On the second day 2 medals and 1/7 of the now remaining medals was awarded; and so on. On the nth and last day, the remaining n medals were awarded.How many days did the contest last, and how many medals were awarded altogether? 
 Brain Teaser No : 00162
At the Party: There were 9 men and children.  There were 2 more women than children. 
The number of different man-woman couples possible was 24. Note that if there were 7 men and 5 women, then there would have been 35 man-woman couples possible.  Also, of the three groups - men, women and children - at the party: There were 4 of one group.  There were 6 of one group.  There were 8 of one group. Exactly one of the above 6 statements is false. 
Can you tell which one is false? Also, how many men, women and children are there at the party? 
Brain Teaser No : 00220
An orange colored glass has Orange juice and white colored glass has Apple juice both of equal volumes. 50ml of the orange juice is taken and poured into the white glass. After that similarly, 50ml from the white glass is poured into the orange glass.  Of the two quantities, the amount of apple juice in the orange glass and the amount of orange juice in the white glass, which one is greater and by how much? 
 Brain Teaser No : 00266
What are the next two letters in the series?  E, O, E, R, E, X, N, T, E, _, _
 Brain Teaser No : 00307
In a small town, there are three temples in a row and a well in front of each temple. A pilgrim came to the town with certain number of flowers.  Before entering the first temple, he washed all the flowers he had with the water of well. To his surprise, flowers doubled. He offered few flowers to the God in the first temple and moved to the second temple. Here also, before entering the temple he washed the remaining flowers with the water of well. And again his flowers doubled. He offered few flowers to the God in second temple and moved to the third temple. Here also, his flowers doubled after washing them with water. He offered few flowers to the God in third temple. 
There were no flowers left when pilgrim came out of third temple and he offered same number of flowers to the God in all three temples.  What is the minimum number of flowers the pilgrim had initially? How many flower did he offer to each God? 
 Brain Teaser No : 00330
The secret agent X emailed a code word to his head office. They are "AIM DUE OAT TIE MOD". But four of these five words are fake and only one contains the information.  The agent X also mailed a sentence as a clue - if I tell you any one character of the code word, you would be able to tell the number of vowels in the code word. Can you tell which is the code word? 
   Search Result 337 - 344 Total Brain teasers found 537    
 Brain Teaser No : 00341
What is the next number in the given series?  10^3, 10^9, 10^27, 10^2, 0, 4, 8, 3, ? 
Note that 10^3 means 10 raised to the power of 3 i.e. 1000. 
Brain Teaser No : 00012  A person travels on a cycle from home to church on a straight road with wind against him. He took 4 hours to reach there. On the way back to the home, he took 3 hours to reach as wind was in the same direction. If there is no wind, how much time does he take to travel from home to church? 
Brain Teaser No : 00071
In training for a competition, you find that swimming downstream (with the current) in a river, you can swim 2 miles in 40 minutes, & upstream (against the current), you can swim 2 miles in 60 minutes.  How long would it take you to swim a mile in still water? 
 Brain Teaser No : 00221
An electric train is going south but the wind is blowing westward.  Which direction will the smoke from the train be blowing? 
 Brain Teaser No : 00249
Few years ago, a Law teacher came across a student who was willing to learn but was unable to pay the fee. The student struck a deal saying, "I would pay your fee the day I win my first case in the court". Teacher agreed and proceeded with the law course. When the course was finished and teacher started pestering the student to pay up the fee, student reminded the deal and pushed days. Fed up with this, the teacher decided to sue the student in the court of law and both of them decided to argue for themselves. Did the teacher make the right decision? Will he get his fee from the student? 
Brain Teaser No : 00298
Which of the following numbers is the odd one out, and why?  1, 2, 3, 5, 9, 13, 21 
Note that 2 is not the odd one. 
 Brain Teaser No : 00361
Four men - Abraham, Bobby, Clinton and Denial - are standing in a straight line.
One man is fair, handsome and unscarred.  Two men who are not fair, are each standing next to Abraham. Bobby is the only man standing next to exactly one handsome man.  Clinton is the only man not standing next to exactly one scarred man.Who is fair, handsome and unscarred? 
 Brain Teaser No : 00366   There are three bulbs on 19th floor and there are three switches X, Y and Z on the ground floor. Each switch belongs to one bulbs, not necessarily in order. You can switch on or off as many times you want but you can go on 19th floor only once.  How will you find out which swich belongs to which bulb? Note that you are the only person over there. You can't go outside and can't use any tools. 
Search Result 345 - 352 Total Brain teasers found 537    
 Brain Teaser No : 00412  Mr. Khemani have a triangular, Royal Blue colored dining table in his house. The three sides of the table are 13, 17 and 43 inches long respectively. He wants to change the color of the table to Olive Green. According to the painter, 50ml of paint per square inch of the table is required for that.  How much paint is required to change the color of the table to Olive Green? 
 Brain Teaser No : 00269
My first is in blue, but not in glue  My second in old but not in new  My third in look but not in see 
My last in ask but not in plea My whole has leaves but not a flower  It will help you pass an idle hour What am I? 
 Brain Teaser No : 00300
A boy goes into a shop to buy some sweets. He uses a £1 coin and buys 40p worth of sweets. The shop assistant gives him two coins for his change.  One of them was not a 50p so how could the boy have gotten his exact change?
Brain Teaser No : 00437
One side of the bottom layer of a triangular pyramid has 12 balls. How many are there in the whole pyramid?  Note that the pyramid is equilateral and solid.
 Brain Teaser No : 00461 Buffalo produces 10 pounds of milk daily, a cow produces 1 pound of milk daily, and sheep produce 1/4 pound of milk daily.  I need exactly 100 pounds of milk from exactly 100 different animals daily. Also, I should use all 3 types of animals.  How do I get it?
Brain Teaser No : 00537 There is a 4-character code, with 2 of them being letters and the other 2 being numbers. How many maximum attempts would be necessary to find the correct code? Note that the code is case-sensitive.
Brain Teaser No : 00599 Given a rectangular cake with a rectangular piece removed (any Size or Orientation). How would you cut the remainder of the cake into two equal halves with one straight cut of a knife? 
 Brain Teaser No : 00665
The three of us made some bets.  First, Waldo won from Molly as much as Waldo had originally. Next, Molly won from Spike as much as Molly then had left. Finally, Spike won from Waldo as much as Spike then had left. We ended up having equal amounts of money. 
I started with 50 cents. Who am I? 
Search Result 353 - 360 Total Brain teasers found 537    
 Brain Teaser No : 00680
A group of fewer than 10 girls found a number of gold-coins which they were able to divide equally among them. After this division had been done, Lalita - one of the girls, suggested that it would be more equitable to divide the gold-coins by families rather than by individuals. Among the them, there were two groups with two sisters, of course Lalita was not in either group. The rest of the girls were unrelated to each other. A re-division by families would have meant that the gold-coins per family were 5 more than the gold-coins per girl.  The girls argued among themselves over this way of dividing the gold-coins. Before a final decision is made, Ash - one of the girls, decided that she did not want any gold-coins. Her share was equally divided (without breaking/cutting any gold-coin) among the other girls.  Finally, Lalita decided to withdraw her suggestion of dividing the gold-coins by families. How many girls were there and how many gold-coins did each girl end up with? 
 Brain Teaser No : 00083
A group of 4 people, Andy, Brenda, Carl, & Dana, arrive in a car near a friend's house, who is having a large party. It is raining heavily, & the group was forced to park around the block from the house because of the lack of available parking spaces due to the large number of people at the party.  The group has only 1 umbrella, & agrees to share it by having Andy, the fastest, walk with each person into the house, & then return each time. It takes Andy 1 minute to walk each way, 2 minutes for Brenda, 5 minutes for Carl, & 10 minutes for Dana. It thus appears that it will take a total of 19 minutes to get everyone into the house.  However, Dana indicates that everyone can get into the house in 17 minutes by a different method. How?  The individuals must use the umbrella to get to & from the house, & only 2 people can go at a time (& no funny stuff like riding on someone's back, throwing the umbrella, etc.) 
Brain Teaser No : 00084 You are in a room with 2 doors leading out. Behind 1 door is a coffer overflowing with jewels & gold, along with an exit. Behind the other door is an enormous, hungry lion that will pounce on anyone opening the door. You do not know which door leads to the treasure & exit, & which door leads to the lion.  In the room you are in, are 2 individuals. The first is a knight, who always tells the truth, & a knave, who always lies. Both of these individuals know what is behind each door. You do not know which individual is the knight, or which one is the knave. You may ask 1 of the individuals exactly 1 question. What should you ask in order to be certain that you will open the door with the coffer behind it, instead of the hungry lion? 
Submit  
 Brain Teaser No : 00304
Only one color, but not one size  Stuck at the bottom, but easily flies 
Present in the sun, but not in the rain Doing no harm, and feeling no pain  What am I?
Brain Teaser No : 00321
What is harder to catch the faster you run?
Brain Teaser No : 00327
Tear me off   Scratch my head What once was red   Now is dead   What am I?
Brain Teaser No : 00573 I give you a group of three. One is sitting down, and will never get up. The second eats as much as is given to him, yet is always hungry. The third goes away and never returns. What are they?
 Brain Teaser No : 00582
If there is a Yellow house on Bluebird Lane, a Green house on Orange Street, a Pink house on Kitten Road, a Black house on Hhitehorse Pike and a Purple house on Firebird hill, where's the White house?
Search Result 361 - 368 Total Brain teasers found 537    
 Brain Teaser No : 00796  What's filled in the morning and emptied at night, and one day of the year its emptied in the morning and emptied at night?
Brain Teaser No : 00042
An emergency vehicle travels 10 miles at a speed of 50 miles per hour. 
How fast must the vehicle travel on the return trip if the round-trip travel time is to be 20 minutes? 
Brain Teaser No : 00048
1/3 rd of the contents of a container evaporated on the 1st day. 3/4th of the remaining contents of the container evaporated on the second day.  What part of the contents of the container is left at the end of the second day? 
Brain Teaser No : 00055    A man and his son are in a car accident. The father dies on the scene, but the child is rushed to the hospital. When he arrives the surgeon says, "I can't operate on this boy, he is my son!" How can this be? 
 Brain Teaser No : 00069
A woman goes into a hardware store to buy something for her house. When asked the price, the clerk replies, "the price of one is twelve cents, the price of forty-four is twenty-four cents, and the price a hundred and forty-four is thirty-six cents.  What does the woman want to buy? 
 Brain Teaser No : 00079
If you started a business in which you earned Rs.1 on the first day, Rs.3 on the second day, Rs.5 on the third day, Rs.7 on the fourth day, & so on.  How much would you have earned with this business after 50 years (assuming there are exactly 365 days in every year)? 
 Brain Teaser No : 00132
If a plane crashes on the border of Mexico and New Mexico, where will they bury the survivors?
Brain Teaser No : 00137    It is raining outside and a man decides to take a walk. He goes outside with nothing but his shirt on his back, jeans on his legs and shoes on his feet, yet not one hair on his head gets wet. Why is that?
Search Result 369 - 376 Total Brain teasers found 537    
 Brain Teaser No : 00219
The floor area of Milan's house is 1007 square feet. The space diagonal of the house s 59.75 feet.   What will be the height of the house? Note that floor is rectangle in shape. Also, length and width are integer. 
Brain Teaser No : 00140
One of Mr. Bajaj, his wife, their son and Mr. Bajaj's mother is an Engineer and another is a Doctor.    If the Doctor is a male, then the Engineer is a male.   If the Engineer is younger than the Doctor, then the Engineer and the Doctor are not blood relatives.   If the Engineer is a female, then she and the Doctor are blood relatives. Can you tell who is the Doctor and the Engineer? 
 Brain Teaser No : 00165    A fish had a tail as long as its head plus a quarter the lenght of its body. Its body was three-quarters of its total length. Its head was 4 inches long. 
What was the length of the fish?
Brain Teaser No : 00252
A man received a cheque. The rupees has been transposed for paise and vice versa. After spending 5 rupees 42 paise, he discovered that he now had exactly six times the value of the correct cheque amount.  What amount should he have received? 
 Brain Teaser No : 00261
The letters P, Q, R, S, T, U and V, not necessarily in that order represents seven consecutive integers from 22 to 33. U is as much less than Q as R is greater than S. 
V is greater than U.   Q is the middle term.      P is 3 greater than S.
Can you find the sequence of letters from the lowest value to the highest value? 
 Brain Teaser No : 00390
B is the brother of J and R is the daughter is J. Z is the sister of B and P is the brother of R. S is the father of Z.   Who is the uncle of P? 
 Brain Teaser No : 00525   In Mr. Mehta's family, there are one grandfather, one grandmother, two fathers, two mothers, one father-in-law, one mother-in-law, four children, three grandchildren, one brother, two sisters, two sons, two daughters and one daughter-in-law.  How many members are there in Mr. Mehta's family? Give minimal possible answer. 
 Brain Teaser No : 00544
If Sean is Louis' brother,      If Marie is Bruno's sister,     And if Paul is Christopher's brother, 
Then who is Hamilton's sister - Mona, Sue or Linda? And Why so?
Search Result 377 - 384 Total Brain teasers found 537    
 Brain Teaser No : 00699
Here in England McDonald's has just launched a new advertising campaign. The poster shows 8 McDonald's products and underneath claims there are 40312 combinations of the above items. 
Given that the maximum number of items allowed is 8, and you are allowed to have less than 8 items, and that the order of purchase does not matter (i.e. buying a burger and fries is the same as buying fries and a burger)  How many possible combinations are there? Are McDonald's correct in claiming there are 40312 combinations?
Brain Teaser No : 00022   There were N stations on a railroad. After adding X stations 46 additional tickets have to be printed.  Find N and X. 
 Brain Teaser No : 00106
A ship went on a voyage. After it had travelled 180 miles a plane statrted with 10 times the speed of the ship. Find the distance when they meet from starting point. 
 Brain Teaser No : 00226   A bus driver was going down a street. He was on the wrong side. He went at a stop sign and didn't signal at a turn. He went under the minimum speed and yet he didn't get in trouble for his actions.   WHY not?
Brain Teaser No : 00311
Replace the letters with the correct numbers.
     T W O
 X   T W O 
 ---------
 T H R E E
Brain Teaser No : 00372
In the first One-day International Cricket match between India and England at Lords, the bowling honours in the Indian team was shared by Kapil Dev, Madanlal and Binni.  Either Kapil took half the wickets or one of the players was run out. Either Kapil took 5 wickets and Binni took 3 or Madanlal took one more than Binni. The sum of Kapil's victims and twice of Madanlal's victims is one more than three times Binni's victims.Can you tell the number of wickets each of them took? 
 Brain Teaser No : 00472
If it is given that: 
25 - 2 = 3    100 x 2 = 20        36 / 3 = 2        What is 144 - 3 = ?
Brain Teaser No : 00617
A man is stranded on a desert island. All he has to drink is a 20oz bottle of sprite. 
To conserve his drink he decides that on the first day he will drink one oz and the refill the bottle back up with water. On the 2nd day he will drink 2oz and refill the bottle. On the 3rd day he will drink 3oz and so on...  By the time all the sprite is gone, how much water has he drunk?
Search Result 385 - 392 Total Brain teasers found 537    
 Brain Teaser No : 00752      Tic-Tac-Toe is being played. One 'X' has been placed in one of the corners. No 'O' has beeplaced yet.   Where does the player that is playing 'O' has to put his first 'O' so that 'X' doesn't win? Assume that both players are very intelligent. Explain your answer.
Brain Teaser No : 00003
In a hotel, rooms are numbered from 101 to 550. A room is chosen at random. What is the probability that room number starts with 1, 2 or 3 and ends with 4, 5 or 6? 
   Brain Teaser No : 00050
Two identical pack of cards A and B are shuffled throughly. One card is picked from A and shuffled with B. The top card from pack A is turned up. If this is the Queen of Hearts, what are the chances that the top card in B will be the King of Hearts? 
 Brain Teaser No : 00096
If you are on a boat and you throw out a suitcase, will the level of water increase? Please note that the boat is in river and you throw out a suitcase in the river. 
Brain Teaser No : 00109
There were two men standing on a street. The one says to the other, "I have 3 daughters, the product of their ages is 36. What is the age of the OLDEST daughter?"  The second guy says, "I need more information." So, the first guy says, "The sum of their ages is equal to the address of the house across the street." The second guy looks at the address and says, "I still need more information." So, the first guy says, "My oldest daughter wears a red dress." 
 Brain Teaser No : 00197
There are 70 employees working with BrainVista of which 30 are females. Also,
30 employees are married 
24 employees are above 25 years of age  19 married employees are above 25 years, of which 7 are males 12 males are above 25 years of age   15 males are married.
How many unmarried females are there and how many of them are above 25? 
 Brain Teaser No : 00210
There are 10 cups placed on a table such that 3 are face up and 7 are bottom up. A move is defined as inverting a pair (compulsorily) of cups.  What is the minimum number of moves required to make all the cups face the same way? 
 Brain Teaser No : 00235
Consider a number 235, where last digit is the sum of first two digits i.e. 2 + 3 = 5.  How many such 3-digit numbers are there? 
   Search Result 393 - 400 Total Brain teasers found 537    
 Brain Teaser No : 00820
Amit, Bhavin, Himanshu and Rakesh are sitting around a table.  The Electonics Engineer is sitting to the left of the Mechanical Engineer. Amit is sitting opposite to Computer Engineer. 
Himanshu likes to play Computer Games. Bhavin is sitting to the right of the Chemical Engineer.
Can you figure out everyone's profession? 
 Brain Teaser No : 00034
My friend collects antique stamps. She purchased two, but found that she needed to raise money urgently. So she sold them for Rs. 8000 each. On one she made 20% and on the other she lost 20%.  How much did she gain or lose in the entire transaction? 
 Brain Teaser No : 00091
Father's age is three years more than three times the son's age. After three years, father's age will be ten years more than twice the son's age.  What is the father's present age? 
 Brain Teaser No : 00177  "Santa Express" is one kilometer long and always travels at the speed of 60 kilometers per hour. It passes through a tunnel which is one kilometer long. How long the Express will take to pass completely through the tunnel? 
 Brain Teaser No : 00196
Veeru says to Jay, "Can you figure out how many Eggs I have in my bucket?" He gives 3 clues to Jay: If the number of Eggs I have  is a multiple of 5, it is a number between 1 and 19 
is not a multiple of 8, it is a number between 20 and 29  is not a multiple of 10, it is a number between 30 and 39  How many Eggs does Veeru have in his bucket? 
 Brain Teaser No : 00198
Once a week a wagon driver leaves his hut and drives his wagon to the river dock to pick up supplies for his town. At 4:05 PM, one-fifth of the way to the dock, he passes the Temple. At 4:15 PM, one-third of the way, he passes the Preetam-Da-Dhabaa.  At what time does he reached the dock? 
 Brain Teaser No : 00246 You live in a hilly section of the suburbs and want to buy a new set of table and chairs for the garden. Would you be better off buying items of furniture that have four legs or three legs? And why? 
 Brain Teaser No : 00414   Sarika multiplied 414 by certain number and obtained 69958 as the answer. But she found that there is some error in the answer - both the 9s in the answer are wrong and all the other digits are correct.  Can you find the correct answer? 
Search Result 401 - 408 Total Brain teasers found 537    
 Brain Teaser No : 00720  Two people enter a race in whick you run to a point and back. Person A runs 20 mph to and from the point. Person B runs to the point going 10 mph and 30 mph going back. Who came in first?
Brain Teaser No : 00024
A person wanted to withdraw X rupees and Y paise from the bank. But cashier made a mistake and gave him Y rupees and X paise. Neither the person nor the cashier noticed that. 
After spending 20 paise, the person counts the money. And to his surprise, he has double the amount he wanted to withdraw.  Find X and Y. (1 Rupee = 100 Paise) 
 Brain Teaser No : 00283 There is a blind man, a deaf man, and a man with no arms. 
Something falls from the sky, the blind man sees it, the deaf man hears it and the man with no arms picks it up and puts it in his pocket. What is it?
Brain Teaser No : 00290
Two men go into a restraunt and both have a glass of ice cold coke. The glasses both had the EXACT same contents. There was poison in the glasses. One man drank his coke fast and lived. The other man drank his slow and died.  Why?
Brain Teaser No : 00363
An untiring servant it is,   carrying loads across muddy earth.   But one thing that can't be forced, 
is a return to the place of its birth. What it is? 
 Brain Teaser No : 00401
There is a cabin on the top of a mountin. There are many people dead inside. They are the only once-living creatures in the cabin. All of the windows and doors are sealed, and there is no human life around for hundreds of miles. There is no way to reach the cabin by car or foot, there are dense woods and dangerous wild animals in the area. How did they get there?
Brain Teaser No : 00548 There is a two digit number, the second digit of which is 4 less than its first digit. Also, the number is divisible by the sum of its digits and if you do so, the quotient would be 7. Find the number. 
Brain Teaser No : 00614
Place the numbers from 1 to 15 in the blocks below, without repeating any of them, such a way that the sum of the numbers in any two adjacent blocks is always a perfect square.
     [] [] [] [] [] [] [] [] [] [] [] [] [] [] []
A whole number is said to be a perfect square if it is equal to some whole number multiplied by itself. e.g. 36 (6*6), 121 (11*11) 
Search Result 409 - 416 Total Brain teasers found 537    
 Brain Teaser No : 00856
Find the least number which when divided by 35, leaves remainder 25; when divided by 45, leaves remainder 35 and when divided by 55, leaves remainder 45. 
 Brain Teaser No : 00185
Two trains starting at same time, one from Bangalore to Mysore and other in opposite direction arrive at their destination 1hr and 4hrs respectively after passing each other. 
How much faster is one train from other? 
Brain Teaser No : 00224
Mrs. Kovarik made twenty four Sandwiches. All but seven were eaten. How many were left?
Brain Teaser No : 00347
At the entrance to a members club stands a stranger seeking admission. A friend told him that it's easy to get in. You just have to answer a question corrcetly! Answering wrong, however, will result in being shot!   To live a little longer, the man waits in a back alley near the entrance for people to go in. After a while a man comes to the entrance. The door warden asks him: "Twelve?" to which he replies "Six!" and goes in.   "That's easy." our friend thinks, but he waits a little longer. 
Another man comes to the door. "Six?" the door warden asks, to which he replies "Three!" and goes in.   "That's too good to be true" our friend thinks, and he was right. Because, when asked "Four?", he answered "Two!" and was found dead in the alley.  What was the correct answer?
Brain Teaser No : 00351
If 6 x 4 = 12 
8 x 6 = 32 
11 x 8 = 66 
then 10 x 10 = ??
Brain Teaser No : 00354
Here is the 7 step proof which says 2=1. 
a and b are non-zero integers.
1.                  a = b
2.                a*a = a*b
3.          a*a - b*b = a*b - b*b
4.  (a + b) * (a - b) = b * (a - b)
5.              a + b = b
6.                2*b = b
7.                  2 = 1
Is it Correct? If not, then what is wrong with the proof? 
Brain Teaser No : 00497       If it is snowing at midnight, what is the possibility that it will be sunny in the same place 72 hours later? 
 Brain Teaser No : 00635
        A  B  C
              D
              E  F  G
                    H
                    I
Each of the digits from 1 to 9 is represented by a different letter above. Also, A + B + C = C + D + E = E + F + G = G + H + I = 13    Which digit does E represent? 
Search Result 417 - 424 Total Brain teasers found 537    
 Brain Teaser No : 00844   Scientist decided to do a study on the population growth of rabbits. Inside a controlled environment, 1000 rabbits were placed.   Six months later, there were 1000Z rabbits. At the beginning of the 3rd year, there were roughly 2828Z rabbits, which was 4 times what the scientists placed in there at the beginning of the 1st year.   If Z is a positive variable, how many rabbits would be there at the beginning of the 11th year?
Brain Teaser No : 00014
Five horses ran in the race.  There were no ties.  Sikandar did not come first. Star was neither first nor last.   Mughal Glory came in one place after Sikandar. Zozo was not second. 
Rangila was two place below Zozo.   In what order did the horses finish? 
 Brain Teaser No : 00178
Vipul was studying for his examinations and the lights went off. It was around 1:00 AM. He lighted two uniform candles of equal length but one thicker than the other. The thick candle is supposed to last six hours and the thin one two hours less. When he finally went to sleep, the thick candle was twice as long as the thin one.  For how long did Vipul study in candle light? 
 Brain Teaser No : 00190
 We have to fill number from 1 to 12 at the intersection point of two or more lines. We have to  construct a star using two triangle. The sum of all number lying in straight lines should be same. This can be easilty understood by the fig. and hence solved.
 Brain Teaser No : 00208
What are the next two numbers in the given series?   5, 6, 5, 6, 5, 5, 7, 6, ?, ? 
 Brain Teaser No : 00253
SkyFi city is served by 6 subway lines - A, E, I, O, U and Z. When it snows, morning service on line E is delayed. When it rains or snows, service on the lines A, U and Z is delayed both morning and afternoon. When the temperature drops below 20 C, afternoon service is cancelled on either line A or line O, but not both.  When the temperature rises above 40 C, afternoon service is cancelled on either line I or line Z, but not both.  When service on line A is delayed or cancelled, service on line I is also delayed. When service on line Z is delayed or cancelled, service on line E is also delayed.On February 10, it snows all day with the temperature at 18C. On how many lines service will be delayed or cancelled, including both morning and afternoon? 
 Brain Teaser No : 00277  In Laloo's family, each son has the same number of sisters and brothers. Also, each daughter has twice the number of brothers than sisters. 
How many sons and daughters does Laloo have? 
Brain Teaser No : 00541
A CAR has a value of 1 and a TRACTOR has a value of 2.  What is the value of an AIRPLANE? Note that AIRPLANE costs more than CAR or TRACTOR.Submitted by : Lynda 
   Search Result 425 - 432 Total Brain teasers found 537    
 Brain Teaser No : 00839
The secret agent X emailed some code to his head office. They are "RADAR, LEVEL, ROTOR, REDIVIDER, MOTOR". But four of these five words have something in common and one is fake. 
Can you tell which one is fake? Ignore the fact that four of the code-words are of the same length. 
 Brain Teaser No : 00007
On one side of a card is written : 
"THE SENTENCE ON THE OTHERSIDE OF THIS CARD IS TRUE."  On turning the card over you find: "THE SENTENCE ON THE OTHERSIDE OF THIS CARD IS FALSE." 
Which sentence is true? 
Brain Teaser No : 00072 What is the minimum number of numbers needed to form every number from 1 to 7,000? Example: To form 4884, you would need 2 4s & 2 8s. 4822 requires a 4, a 8, & 2 2s, but you would not count the numbers again that you had already counted from making 4884. 
 Brain Teaser No : 00124
How can 1,000,000,000 be written as a product of two factors neither of them containing zeros? 
Brain Teaser No : 00182   Subhash is 14 inches taller than Jatin. The difference between Subhash and Sanjeev is two inches less than between Sanjeev and Jatin. Subhash at 6'6" is the tallest. How tall are Sanjeev and Jatin? 
 Brain Teaser No : 00326
The sum of their (father, mother and son) ages is 70. The father is 6 times as old as the son. When the sum of their ages is twice 70, the father will be twice as old as the son. 
How old is the mother?
Brain Teaser No : 00339  What numbers do X and Y represent in the following series: 
2, 6, 12, 20, 30, 42, X, Y
Brain Teaser No : 00406  What is the four-digit number in which the first digit is 1/3 of the second, the third is the sum of the first and second, and the last is three times the second?
   Search Result 433 - 440 Total Brain teasers found 537    
 Brain Teaser No : 00407  A 3 digit number is such that it's unit digit is equal to the product of the other two digits which are prime. Also, the difference between it's reverse and itself is 396.  What is the sum of the three digits?
Brain Teaser No : 00010
In a contest of intelligence, three problems A, B and C were posed. Among the contestants there were 25 who solved at least one problem each. Of all the contestants who did not solve problem A, the number who solved B was twice the number who solved C.  The number of participants who solved only problem A was one more than the number who solved problem A and at least one other problem. Of all students who solved just one problem, half did not solve problem A.
How many students solved only problem B? 
 Brain Teaser No : 00011
When Alexander the Great attacked the forces of Porus, an Indian soldier was captured by the Greeks. He had displayed such bravery in battle, however, that the enemy offered to let him choose how he wanted to be killed. They told him, "If you tell a lie, you will put to the sword, and if you tell the truth you will be hanged."  The soldier could make only one statement. He made that statement and went free. What did he say? 
 Brain Teaser No : 00015   In the town called Alibaug, the following facts are true:  No two inhabitants have exactly the same number of hairs. No inhabitants has exactly 2025 hairs.  There are more inhabitants than there are hairs on the head of any one inhabitants. What is the largest possible number of the inhabitants of Alibaug? 
Brain Teaser No : 00017
A card contains following three sentences:   THIS SENTENCE CONTAINS FIVE WORDS.     THIS SENTENCE CONTAINS TWO VERBS.  EXACTLY ONE SENTENCE ON THIS CARD IS TRUE.  Is sentence C true or false? 
 Brain Teaser No : 00018
A barber in a certain small town shaves all the men who do not shave themselves, but never shaves any who do shave themselves.  Does the barber shave himself? Note that the barber is a man. 
 Brain Teaser No : 00060
A woman had two sons who were born on the same hour of the same day of the same month of the same year. But they were not twins.  How could this be so? 
 Brain Teaser No : 00086
A prisoner is told "If you tell a lie we will hang you; if you tell the truth we will shoot you." What can he say to save himself? Note that he must say something to save himself. 
   Search Result 441 - 448 Total Brain teasers found 537    
 Brain Teaser No : 00097
You have two jars, 50 red marbles and 50 blue marbles. A jar will be picked at random, and then a marble will be picked from the jar. You can place maximum of 50 marbles in each jar. 

Placing all of the marbles in the jars, how can you maximize the chances of a red marble being picked? What are the exact odds of getting a red marble using your scheme? 
Brain Teaser No : 00004
There is a family party consisting of two fathers, two mothers, two sons, one father-in-law, one mother-in-law, one daughter-in-law, one grandfather, one grandmother and one grandson. 
What is the minimum number of persons required so that this is possible? 
Brain Teaser No : 00076 A cube is made of a white material, but the exterior is painted black. 
If the cube is cut into 125 smaller cubes of exactly the same size, how many of the cubes will have atleast 2 of their sides painted black? 
 Brain Teaser No : 00115
Four prisoners escape from a prison. 
The prisoners, Mr. East, Mr. West, Mr. South, Mr. North head towards different directions after escaping. The following information of their escape was supplied:
The escape routes were North Road, South Road, East Road and West Road 
None of the prisoners took the road which was their namesake 
Mr. East did not take the South Road 
Mr.West did not the South Road 
The West Road was not taken by Mr. East
What road did each of the prisoners take to make their escape? 
Brain Teaser No : 00142
There are four groups of Mangoes, Apples and Bananas as follows: 
Group I : 1 Mango, 1 Apples and 1 Banana 
Group II : 1 Mango, 5 Apples and 7 Bananas 
Group III : 1 Mango, 7 Apples and 10 Bananas 
Group IV : 9 Mango, 23 Apples and 30 Bananas 
Group II costs Rs 300 and Group III costs Rs 390. 
Can you tell how much does Group I and Group IV cost? 
 Brain Teaser No : 00480
There are N players in the Chess Tournament. If a player loses a game, he is immediately eliminated from the tournament.  How many games will be played to determine the winner? 
 Brain Teaser No : 00483
Four couples are going to the movie. Each row holds eight seats. Betty and Jim don't want to sit next to Alice and Tom. Alice and Tom don't want to sit next to Gertrude and Bill. On the otherhand, Sally and Bob don't want to sit next to Betty and Jim.  How can the couples arrange themselves in a row so that they all sit where they would like?
 Brain Teaser No : 00550
There is a boat docked on the shore and there is a ladder on the side of the boat which reads 10 feet. The high tide comes in at 10:00AM and water level increases constantly at the rate of 2 feet per hour.  What will the ladder read at 12:30PM?
Search Result 449 - 456 Total Brain teasers found 537    
 Brain Teaser No : 00855
Angela had a craving for mixed nuts, but all she had in the cupboard was a bag of peanuts and a bag of almonds (Guess she needs to do some shopping). Being the smart young lady that she is, she poured all the almonds into an empty jar and then poured all of the peanuts on top, which did not quite fill the jar.   Angela thought to herself, "I want mixed nuts." She put the lid on and begin vigorously shaking the jar up and down in order to get mixed nuts while watching education television. After a few minutes of continuous shaking she suddenly realized that the peanuts and almonds were not mixed at all. In fact, the almonds were on top! Angela was amazed to see that the almonds rose to the top, even though she knew that the almonds were bigger and heavier than the peanuts.  She got to thinking that this is the same thing that happens in boxes of cereal and bags of potato chips. Why, she wonders, does the heavier objects shake to the top? 
Can anyone out there help Angela figure this out.
Brain Teaser No : 00085   You have 3 baskets, & each one contains exactly 4 balls, each of which is of the same size. Each ball is either red, black, white, or purple, & there is one of each color in each basket. If you were blindfolded, & lightly shook each basket so that the balls would be randomly distributed, & then took 1 ball from each basket, what chance is there that you would have exactly 2 red balls? 
 Brain Teaser No : 00169 Pinto says, "The horse is not Black."  Sandy says, "The horse is either Brown or Grey." Andy says, "The horse is Brown." At least one is telling truth and at least one is lying. Can you tell the color of the horse? 
 Brain Teaser No : 00191
Decipher this sentence.
         B R W Q H L F K W   H J K   Q I B W K   
         Q I C E D W   Z B G   W K K   M I K E
         Z B G   Q H S K   Z B G J   K Z K W
         B U U   Z B G J   D B H F W.
Brain Teaser No : 00206
A tank can be filled by pipe A in 30 minutes and by pipe B in 24 minutes. Outlet pipe C can empty the full tank in one hour and twenty minutes.  If the tank is empty initially and if all the three pipes A, B and C are opened simultaneously, in how much time will the tank be full? 
 Brain Teaser No : 00332
What are the next two numbers in the following series:  1, 1, 2, 6, 24, 20, 20, 40, 20, 80, ?, ?
Brain Teaser No : 00533
What are the next two numbers in the series?  29, 11, 13, 17, 25, 32, 37, ?, ? 
 Brain Teaser No : 00605
"We - Amar, Akbar and Anthony - each have some children. Amar has at least one girl and twice as many boys as girls. Akbar has at least one girl and three times as many boys as girls. 
Anthony has at least one girl and three more boys than girls. 
When I tell you the number of children we have altogether - a number less than 25 - you will know how many children I have, but not how many children each of others has."
Who is the speaker and how many children he have? 
Search Result 457 - 464 Total Brain teasers found 537    
 Brain Teaser No : 00607
What are the next two numbers in the given series?  2, 11, 75, 700, 8476, ?, ? 
 Brain Teaser No : 00009
A man was looking at a portrait. Someone asked him, "Whose picture are you looking at?" 
He replied, pointing at the portrait : "Brothers and sisters have I none, but this man's father is my father's son."  Whose picture was the man looking at? 
Brain Teaser No : 00013
A man was looking at a portrait. Someone asked him, "Whose picture are you looking at?" 
He replied, pointing at the portrait: "Brothers and sisters have I none, but this man's son is my father's son."  Now whose picture is the man looking at? 
 Brain Teaser No : 00103
Three friends divided some bullets equally. After all of them shot 4 bullets the total number of bullets remaining is equal to the bullets each had after division. Find the original number divided. 
Brain Teaser No : 00104
A farmer needs 8 gallons of water. He has only three unmared buckets, two 6 gallon and one 11 gallon bucket.  How can he collect 8 gallons of water using three unmarked buckets? Provide solution with minimal water wastage. 
 Brain Teaser No : 00131   If a rooster is on top of a house and the rooster lays an egg which way will the egg fall down the house.
 Brain Teaser No : 00144
There are 3 colored boxes - Red, Green and Blue. Each box contains 2 envelopes. Each envelope contains money - two of them contain Rs. 25000 each, two of them contain Rs. 15000 each and remaining two contain Rs. 10000 each. 
There is one statement written on the cover of each box. 
* Red Box: Both, a red box and a blue box contain Rs. 10000 each. 
* Green Box: Both, a green box and a red box contain Rs. 25000 each. 
* Blue Box: Both, a blue box and a green box contain Rs. 15000 each. 
Only one of the above 3 statements is true and the corresponding box contains the maximum amount. Can you tell which box contains the maximum amount and how much? 

Brain Teaser No : 00188
What letter comes next in the series:  O, T, T, F, F, S, S, E, N, _?
Search Result 465 - 472 Total Brain teasers found 537    
 Brain Teaser No : 00211 A man went downstairs to get a drink. He turned of the tap and the lights and went to bed. When he woke up in the middle of the night he saw thousands of people dead, so he jumped out the window and killed himself.  Why did he kill himself?
Brain Teaser No : 00045
A class of 100 students. 24 of them are girls and 32 are not. Which base am I using? 
 Brain Teaser No : 00215
Sam and Mala have a conversation.  Sam says I am certainly not over 40 
Mala says I am 38 and you are atleast 5 years older than me   Now Sam says you are atleast 39 
All the statements by the two are false. How old are they really? 
 Brain Teaser No : 00227 Mrs. Watsherface had a garage sale. A custmer named Gina bought an old lamp and a rug. She paid a total of $5.25 for everything. The rug cost 25 cents more than the lamp. How much did each cost?
Brain Teaser No : 00229
Difference between Bholu's and Molu's age is 2 years and the difference between Molu's and Kolu's age is 5 years.  What is the maximum possible value of the sum of the difference in their ages, taken two at a time?
Brain Teaser No : 00538
A doctor gives you 3 pills telling you to take one every half hour.  How long would the pills last?
Brain Teaser No : 00570
A is the father of two children - B and D who are of different sexes. 
C is B's spouse. 
E is the same sex as D. 
B and C have the two children - F who is the same sex as B and G who is the same sex as C. 
E's mother, H who is married to L, is the sister of D's mother, M. 
E and E's spouse, I have two children - J and K who are the same sex as I. Note that no persons have married more than once. Also, there are more number of females than males. Can you tell how many females are there? 
 Brain Teaser No : 00626
On evey Sunday Amar, Akbar and Anthony lunch together at Preetam-Da-Dhaba where they order lassi based on following facts. Unless neither Amar nor Akbar have lassi, Anthony must have it. If Amar does not have lassi, either Akbar or Anthony or both have it.  Anthony has lassi only if either Amar or Akbar or both have it. Akbar and Anthony never have lassi together.
Who order(s) lassi? 
Search Result 473 - 480 Total Brain teasers found 537    
 Brain Teaser No : 00821
Pooja and Esha met each other after long time. In the course of their conversation, Pooja asked Esha her age. Esha replied, "If you reverse my age, you will get my husbund's age. He is of course older than me. Also, the difference between our age is 1/11th of the sum of our age." 
Can you help out Pooja in finding Esha's age? 
Brain Teaser No : 00400
Mr. and Mrs. Birla & Mr. and Mrs. Tata competed in a Chess tournament. Of the three games played: In only the first game were the two players married to each other, 
The men won two games and the women won one game.  The Birlas won more games than the Tatas. Anyone who lost a game did not play a subsequent game.
Who did not lose a game? 
 Brain Teaser No : 00440
Eight players participated in the recent BOOM Chess Tournament. 
Each player played all of the others exactly once. The winner of a game received 1 point and a loser 0; draws are allowed, giving each player 1/2 point. Now, it turned out that everyone received a different number of points. Furthermore, Sujay, who came in second, earned as many points as the four bottom finishers put together.What was the result of the game between Parag, who came in third, and Manav, who came in fifth? 
 Brain Teaser No : 00099
You have someone working for you for seven days and a gold bar to pay them. The gold bar is segmented into seven connected pieces. You must give them a piece of gold at the end of every day.  If you are only allowed to make two breaks in the gold bar, how do you pay your worker? 
 Brain Teaser No : 00179 I bet you Rs. 100 that if you give me Rs. 200, I will give you Rs. 300 in return.  Would you bet with me? Why? 
 Brain Teaser No : 00186
500 men are arranged in an array of 10 rows and 50 columns according to their heights. Tallest among each row of all are asked to come out. And the shortest among them is A. Similarly after resuming them to their original positions, the shortest among each column are asked to come out. And the tallest among them is B. Now who is taller A or B ? 
 Brain Teaser No : 00216
When Socrates was imprisoned for being a disturbing influence, he was held in high esteem by his guards. All four of them hoped that something would occur that would facilitate his escape. One evening, the guard who was on duty intentionally left the cell door open so that Socrates could leave for distant parts.  Socrates did not attempt to escape, as it was his philosophy that if you accept society's rules, you must also accept it's punishments. However, the open door was considered by the authorities to be a serious matter. It was not clear which guard was on that evening. The four guards make the following statements in their defense: 
Aaron: 
A) I did not leave the door open. 
B) Clement was the one who did it. 
Bob: 
A) I was not the one who was on duty that evening. 
B) Aaron was on duty. 
Clement: 
A) Bob was the one on duty that evening. 
B) I hoped Socrates would escape. 
David: 
A) I did not leave the door open. 
B) I was not surprised that Socrates did not attempt to escape.     Considering that, in total, three statements are true, and five statements are false, which guard is guilty? 
 Brain Teaser No : 00238      Imagine a triangle of coins on a table so that the first row has one coin in it and the second row has two coins in it and so on. If you can only move one coin at a time, how many moves does it take to make the triangle point the other way?   For a triangle with two row it is one, for a triangle with three rows it is two, for a triangle with four rows it is three. For a traingle with five rows is it four?
   Search Result 481 - 488 Total Brain teasers found 537    
 Brain Teaser No : 00505
Pappu, Nandu, Mamu and Chhoti participated in a POOL compitition. 
FACTS
There are total of 15 balls. 
For each ball potted, the player will receive one point.   They all will play each other once. 
A game will end when all the balls are potted. The winner will be the player who scored the most points.OUTCOMES  Chhoti finished with 18 points.  Pappu finished with odd number of points. 
Mamu beat Chhoti by 5 points in the match between them.  There was one point difference in match between Nandu and Pappu. Pappu scored twice as many points as Mamu in their game. 
Chhoti scored one point less against Pappu than he did against Mamu.  Mamu scored 7 points against Nandu.Who won the competition? How many points did each player score? 
 Brain Teaser No : 00029   A fly is flying between two trains, each travelling towards each other on the same track at 60 km/h. The fly reaches one engine, reverses itself immediately, and flies back to the other engine, repeating the process each time.  The fly is flying at 90 km/h. If the fly flies 180 km before the trains meet, how far apart were the trains initially? 
 Brain Teaser No : 00033  There are 9 coins. Out of which one is odd one i.e weight is less or more. How many iterations of weighing are required to find odd coin? 
Brain Teaser No : 00113
The Bulls, Pacers, Lakers and Jazz ran for a contest.  Anup, Sujit, John made the following statements regarding results.Anup said either Bulls or Jazz will definitely win  Sujit said he is confident that Bulls will not win John said he is confident that neither Jazz nor Lakers will win
When the result came, it was found that only one of the above three had made a correct statement. Who has made the correct statement and who has won the contest? 
 Brain Teaser No : 00214
Can you decode the following Cryptogram?
    R K A   P B R G S G X R   R K G J N X
    R K G X   G X   R K A   Z A X R   P T
    U I I   Y P F I E X.   R K A   B A X X G S G X R
    T A U F X   R K G X   G X   R F D A.
Brain Teaser No : 00272 What are the next two numbers in this series?  1, 4, 1, 5, 9, 2, _, _
Brain Teaser No : 00377  A horse is tied to a five meter rope, six meters away from it was a bail of hay. Without breaking the rope, the horse was able to get to the bail of hay. 
How is this possible? 
 Brain Teaser No : 00387 Arnold bought a brand new car with one extra tyre. Each tyre can sustain for maximum of 1200 kms.   If all the tyres were used equally, how far can the car travel? 
Search Result 489 - 496 Total Brain teasers found 537    
 Brain Teaser No : 00496
Karan bought a little box of midget matches, each one inch in length. He found that he could arrange them all in the form of a triangle whose area was just as many square inches as there were matches.   He then used up six of the matches, and found that with the remainder he could again construct another triangle whose area was just as many square inches as there were matches. And using another six matches he could again do precisely the same. How many matches were there in the box originally? Note that the match-box can hold maximum of 50 matches. 
 Brain Teaser No : 00053
A man is going to an Antique Car auction. All purchases must be paid for in cash. He goes to the bank and draws out $25,000.  Since the man does not want to be seen carrying that much money, he places it in 15 evelopes numbered 1 through 15. Each envelope contains the least number of bills possible of any available US currency (i.e. no two tens in place of a twenty). 
At the auction he makes a successful bid of $8322 for a car. He hands the auctioneer envelopes number(s) 2, 8, and 14. After opening the envelopes the auctioneer finds exactly the right amount.  How many ones did the auctioneer find in the envelopes? 
 Brain Teaser No : 00160
A family photo contained: 
one grandfather, one grandmother;   two fathers, two mothers; 
six children, four grandchildren; two brothers, two sisters; 
three sons, three daughters; one father-in-law, one mother-in-law, one daughter-in-law, one son-in-law   30 people you may think, but no, what is the least number of people here? 
 Brain Teaser No : 00172       If you were to spell out numbers (starting from 1) in English, how far would you have to go until you would find the letter "A"? 
 Brain Teaser No : 00200
An apple vendor has 1000 apples and 10 empty boxes. He asks his son to place all the 1000 apples in all the 10 boxes in such a manner that if he asks for any number of apples from 1 to 1000, his son should be able to pick them in terms of boxes. How did the son place all the apples among the 10 boxes, given that any number of apples can be put in one box. 
 Brain Teaser No : 00245
Some will use me, while others will not.  Some have remembered, while others have forgot. 
For profit or gain, I'm used expertly. I can't be picked off the ground or tossed into the sea. 
Only gained from patience and time, can you unravel my rhyme? 
 Brain Teaser No : 00357
Three men - Sam, Cam and Laurie - are married to Carrie, Billy and Tina, but not necessarily in the same order.  Sam's wife and Billy's Husband play Carrie and Tina's husband at bridge. No wife partners her husband and Cam does not play bridge.  Who is married to Cam? 
 Brain Teaser No : 00429
Mr. Desai lives at 20, Dabba Street with his wife Shirin. They have have nine sons and each son has one sister.  How many members are in Mr. Desai's family? 
   Search Result 497 - 504 Total Brain teasers found 537    
 Brain Teaser No : 00506
What is the last digit of 746? In other words, what will the remainder be, if 746 is divided by 10? 
Don't try to solve this on calculator, you may get the wrong answer. Also, do explain your answer. 
Brain Teaser No : 00180
Which number in the series does not fit in the given series:    1 4 3 16 6 36 7 64 9 100 
 Brain Teaser No : 00183
Thirty white horses on a red hill,    First they champ,  Then they stamp,   Then they stand still. 
 Brain Teaser No : 00201 What is so fragile that when you say its name you break it? 
Brain Teaser No : 00205   Which is correct: 
A> The Second Millennium began on Jan 1, 2000 
B> The Second Millennium will begin on Jan 1, 2001 
 Brain Teaser No : 00209
If today is Wednesday, what is one day before the day, after the day, three days after the day before yesterday?  Submitted by : Jennifer Renick 
 Brain Teaser No : 00233
A man is looking at a picture, in his mother's, only brother's, nephew's house.  Someone walks by this man and asks "Who are you looking at?". The man answered "I am looking at my daughter's,only brother's, mother's, father's son-in-law's,son's, father's picture. Also, neither I nor my wife have brothers or sisters." Whose house is the man in and who is he looking at?
Submitted by : Hannah Brooks 
 Brain Teaser No : 00234
Substitute digits for the letters to make the following Division true.
                   A L E
              ------------
        C A R | E A R L Y
              | C A R
              -----------
                R F F L
                I L Y I
                ---------
                  Y Y I Y
                  Y Y A U
                 --------
                        T
Note that the leftmost letter can't be zero in any word. Also, there must be a one-to-one mapping between digits and letters. e.g. if you substitute 3 for the letter Y, no other letter can be 3 and all other Y in the puzzle must be 3.
Search Result 505 - 512 Total Brain teasers found 537    
 Brain Teaser No : 00237  A girl has a certain number of pets. All but two are dogs, all but two are cats and all but two are goats.   How many pets does this girl have?
Brain Teaser No : 00040
Assume for a moment that the earth is a perfectly uniform sphere of radius 6400 km. Suppose a thread equal to the length of the circumference of the earth was placed along the equator, and drawn to a tight fit.  Now suppose that the length of the thread is increased by 12 cm, and that it is pulled away uniformly in all directions.  By how many cm. will the thread be separated from the earth's surface? 
 Brain Teaser No : 00213
Kate, Demi, Madona, Sharon, Britney and Nicole decided to lunch together in a restaurant. The waiter led them to a round table with six chairs.  How many different ways can they seat? 
 Brain Teaser No : 00279
To move a Safe, two cylindrical steel bars 7 inches in diameter are used as rollers. 
How far will the safe have moved forward when the rollers have made one revolution?
 Brain Teaser No : 00294 A champion weight lifter has a brother that's a doctor, but the same doctor doesn't have a brother. How are they related then?
Brain Teaser No : 00296
Substitute digits for the letters to make the following subtraction problem true.
               S  A  N  T  A
            -  C  L  A  U  S
            -----------------
                  X  M  A  S
Note that the leftmost letter can't be zero in any word. Also, there must be a one-to-one mapping between digits and letters. e.g. if you substitute 3 for the letter M, no other letter can be 3 and all other M in the puzzle must be 3. 
Brain Teaser No : 00344          What is always coming but never arrives?
 Brain Teaser No : 00391
In the following multiplication, certain digits have been replaced with asterisks (*). Replace all the asterisks such that the problem holds the result.
          *  *  7
       X  3  *  *
       ----------
       *  0  *  3
       *  1  *
    *  5  *
    -------------
    *  7  *  *  3
Search Result 513 - 520 Total Brain teasers found 537    
 Brain Teaser No : 00640
Flat as a leaf     Round as a ring     Has two eyes,      But can't see a thing. Submitted by : Nina 
 Brain Teaser No : 00037
Suppose I declare : "I am now lying."                Am I lying or telling the truth? 
 Brain Teaser No : 00310 
Using 1, 5, 6, 7 only once make 21 using the operations +, -, *, /, ( and ) only.
Brain Teaser No : 00527
A murderer is condemned to death. He has to choose between three rooms. The first is full of raging fires, the second is full of assassins with loaded guns, and the third is full of lions that haven't eaten in 3 years.  Which room is the safest for him?
Brain Teaser No : 00627  If a man holds an Apple in his left hand, and an Orange in his right, What time does the 10:00 train come at?
Brain Teaser No : 00658   You have four 9's and you may use any of the (+, -, /, *) as many times as you like. I want to see a mathematical expression which uses the four 9's to = 100 
How many such expressions can you make?
Brain Teaser No : 00667
The Beginning Of Eternity   The End Of Time And Space   The Beginning Of Every End, 
And The End Of Every Place What am I?
Brain Teaser No : 00670
I have four wings, but cannot fly   I never laugh and never cry  On the same spot I'm always found, toiling away with little sound.  What am I?
Search Result 521 - 528 Total Brain teasers found 537    
 Brain Teaser No : 00697 If an odd number is red and an even number is blue and you add them together what colour does it make?
 Brain Teaser No : 00148
A man comes into town on Friday and leaves three days later on Friday.  How does he do it?
Brain Teaser No : 00171
Two fathers and two sons go out hunting one day in a huge forest. At the end of the day, only three people emerge from the forest.  What happened? Note that not a single person is killed/death.
 Brain Teaser No : 00192
There were an electrician and a plumber waiting in line for admission to the Home Show. One of them was the father of the other's son. How could this be possible? 
Brain Teaser No : 00313  A group of friends went on a holiday to a hill station. It rained for 13 days. But when it rained in the morning, the afternoon was lovely. And when it rained in the afternoon, the day was preceded by clear morning.  Altogether there were 11 very nice mornings and 12 very nice afternoons. How many days did their holiday last? 
 Brain Teaser No : 00325 What walk on 4 legs in the morning, 2 legs in the afternoon and 3 legs at the night?  Brain Teaser No : 00394
Shivangi is the 11th girl from either end of the raw of girls. How many girls are there in a row? 
 Brain Teaser No : 00410
On one side of the river there is a man, a wolf, a goat, and some cabbage. The man needs to take each of them across to the other side of the river. He has a boat, but in it he can only fit one of them as well as himself.   If he takes the wolf across first, the goat will eat the cabbage. If he takes the cabbage across, the wolf will eat the goat.  Write the correct order in which he can take them across.
Search Result 529 - 536 Total Brain teasers found 537    
 Brain Teaser No : 00559  If you were to dial any 7 digits on a telephone in random order, what is the probability that you will dial your own phone number?   Assume that your telephone number is 7-digits.
 Brain Teaser No : 00062 It happens once in a minute, twice in a week, and once in a year? What is it?  
 Brain Teaser No : 00155   Which is heavier a pound of bricks or a pound of feathers?
Brain Teaser No : 00323
Find next two numbers in the series :  100, 365, 24, 60, ?, ? 
 Brain Teaser No : 00333 You've often cut me through in the years 
Yet it is you that bursts into tears  Who am I?
 Brain Teaser No : 00402 Up and down they go, but never move.  What are they? 
 Brain Teaser No : 00459  How many months have 29 days in year 2000? 
Which month(s)?
Brain Teaser No : 00460     The WWE tournament was about to begin where each participant would compete against every other participant.     At the last moment, some new participants appeared and asked that they be allowed to fight in the competition. Because of them, 26 more competitions had to be scheduled. How many new participants were there? 
Search Result 537 - 537 Total Brain teasers found 537    
 Brain Teaser No : 00836   I have two eyes but can't see,   Two feet but can't walk,   A beak but can't eat,  Two wings, but can't fly. What am I?