Find the probability
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Find the probability

[From: ] [author: ] [Date: 11-11-05] [Hit: ]
find the probability that you win your 1st prize with your 4th purchase.-Ill have to disagree with Justin.the probability of winning is 1/4 with each cereal box you purchase,p = 3/4 * 3/4 * 3/4 * 1/4 = 27/256 = 0.Each chance has a 1/4 probability.1/4 * 1/4 * 1/4 * 1/4 = 1/256-it is very likely but cereal makers rip u off on that stuff so,......
A cereal maker places a game piece in its cereal boxes.The probability of winning a prize is 1 in 4, find the probability that you win your 1st prize with your 4th purchase.

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I'll have to disagree with Justin. I think it goes like this:

the probability of winning is 1/4 with each cereal box you purchase, but you have to NOT win on the first 3 boxes so

p = 3/4 * 3/4 * 3/4 * 1/4 = 27/256 = 0.10546875

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1/256

Each chance has a 1/4 probability.
1/4 * 1/4 * 1/4 * 1/4 = 1/256

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it is very likely but cereal makers rip u off on that stuff so, more or less likely
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