What is the chance of winning a chocolate bar in this promotion?

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Imagine a simple chocolate bar promotion in which there is a 6 in 1 chance of winning another bar. My question is; If you buy six bars, what is the chances that at least one will be a winner?
 
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This is not a probability of a probability.
It is simply a binomial distribution, letting X = the number of winners in the 6 that you buy, you want to calculate P(X >= 1 | n = 6, p = 1/6)
 
Dr Chaos said:
My question is; If you buy six bars, what is the chances that at least one will be a winner?

One minus the chance that none are winners.
 
Dr Chaos said:
Imagine a simple chocolate bar promotion in which there is a 6 in 1 chance of winning another bar. My question is; If you buy six bars, what is the chances that at least one will be a winner?

6 in 1 chance?

I guess you mean 1 in 6 chance.
 
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