Lottery is nothing but another form of gambling, approved by the authority. Lottery, just like any other gambling, is attracting the buyer with its prize money. These days most of the State Governments are encouraging this lottery business. Several private lotteries are also there in the market.
Now just think about the chances of winning a prize in a lottery draw where two lakhs of tickets are sold. Generally more than one series of tickets will be printed, like A, B, C, etc. Assume there are two series A and B. Then totally there are four lakh tickets. The ticket draw is done with the help of a mechanical device (now computerisation has been introduced). It is a cylindrical device which could be rotated with the help of handle connected on one side. To decide the winning series first the two letters A and B will be drawn randomly. This mechanically is done by putting two coin like objects marked respectively with A and B on them. The cylinder is rotated a few number of times and tone coin is taken out without bias. Next step will be to decide the winning numbers. Ten coin like objects carrying the ten numbers, one on each, will be put inside the cylinder. Then rotate the cylinder and take one coin, the number on the coin will be written down on the first place of the winning number. Put it back into the cylinder and again rotate. Take one coin again the resulthelp to fill the tenth place of the winning number. Next is selecting the 100th place number. Like this continue till the number for the 1, 00, 000th place is drawn. From this one can see what is the chanceof getting a winning number. For each position a number is drawn with a probability of 1/10. Every draw is independent of the other draw. Hence the probability becomes the product of individual probabilities. That gives the probability for every 4 lakh ticket as (1/10)×(1/10)×.......×(1/10). See how small is the chance of getting a number. In this example the chance of getting the series A or B also influencethe result. So what about winning the prize?
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