1. A hotel has 10 stores. Which floor is above the floor below the floor, below the floor above the floor, below the floor above the fifth ?
2. Replace each letter by a digit. Each letter must be represented by the same digit and no beginning letter of a word can be 0.
O N E
O N E
O N E
O N E
-------
T E N
3. Next number in the series is
1 , 2 , 4 , 13 , 31 , 112 , ?
4. How can 1000000000 be written as a product of two factors neither of them containing zeros ?
5. An escalator is descending at constant speed. A walks down and takes 50 steps to reach the bottom. B runs down and takes 90 steps in the same time as A takes 10 steps. How many steps are visible when the escalator is not operating?
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| Author: mohan 19 Jun 2008 | Member Level: Gold | Rating:  Points: 3 |
3.Solution:
Explanation....
The Given Series is 1,2,4,13,31,112,...
Actually the series is 1,2,4,8,16,32,....
James convert these numbers into the base 5.
it means ......
5 | 8
----
1 - 3
5 | 16
-----
3 - 1
5 | 32
-----
5 | 6 - 2
----
1 - 1
5 | 64
----
5 | 12 - 4
----
2 - 2
So this series going like.. 1, 2, 4, 13, 31, 112, 224, 1003,.....
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| Author: mohan 19 Jun 2008 | Member Level: Gold | Rating: Points: 3 |
4.Solution:
2 power 9 x 5 power 9
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| Author: mohan 19 Jun 2008 | Member Level: Gold | Rating: Points: 3 |
5.Solution:
An escalator is descending at constant speed. A walks down and
takes 50 steps to reach the bottom. B runs down and takes 90 steps
in the same time as A takes 10 steps. How many steps are visible
when the escalator is not operating?
Sol: Lets suppose that A walks down 1 step / min and
escalator moves n steps/ min
It is given that A takes 50 steps to reach the bottom
In the same time escalator would have covered 50n steps
So total steps on escalator is 50+50n.
Again it is given that B takes 90 steps to reach the bottom and time
taken by him for this is equal to time taken by A to cover 10 steps i.e
10 minutes. So in this 10 min escalator would have covered 10n steps.
So total steps on escalatro is 90 + 10n
Again equating 50 + 50n = 90 +10n we get n = 1
Hence total no. of steps on escalator is 100.
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| Author: mohan 19 Jun 2008 | Member Level: Gold | Rating: Points: 3 |
2.solution:
1 8 2
1 8 2
1 8 2
1 8 2
-----
7 2 8
-----
so:
0=1
N=8;
E=2;
T=7;
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| Author: Shanthi M 19 Jun 2008 | Member Level: Diamond | Rating: Points: 2 |
Well Mohan.
Answers are correct.
Try the first one.
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| Author: hari 19 Jun 2008 | Member Level: Silver | Rating: Points: 2 |
What about the others solutions is it correct or not?
If it is correct, we need to rate it right?
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