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07 Jun 2017, 05:53
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There are 1000 lotteries
each lottery has 1000 tickets
each lottery has 1 prize
You buy 1 ticket in each of 1000 lotteries thus u end up with 1000 tickets
Q what is the probability that you win at least 3 prizes.
each lottery has 1000 tickets
each lottery has 1 prize
You buy 1 ticket in each of 1000 lotteries thus u end up with 1000 tickets
Q what is the probability that you win at least 3 prizes.
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07 Jun 2017, 05:56
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question is on youtube by name "Second (more difficult) Lottery Problem" could not post link as i am new not allowed.
07 Jun 2017, 06:04
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alimuhammadtariq
would be better if you provide choices..
otherwise this can be solved by finding chances of winning none, 1 or 2 prizes and then subtract from ONE..
winning NONE = \(\frac{999}{1000}^1000\)
winning 1= 1/1000 * (999/1000)^999 * 1000C1
and so on...
now ans = 1- \(\frac{999}{1000}^1000\)-1/1000 * (999/1000)^999 * 1000C1-1/1000 * 1/1000 * (999/1000)^998 * 1000C2
