SOLUTION: Find the probability of at least one 3 in 8 rolls of a fair die.

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Question 341498: Find the probability of at least one 3 in 8 rolls of a fair die.
Found 2 solutions by edjones, stanbon:
Answer by edjones(8007) About Me  (Show Source):
You can put this solution on YOUR website!
(5/6)^8n Probability of 8 consecutive non threes.
=.2326
1-.2326=.7674 Probability of at least one 3 in 8 rolls of a fair die.
.
Ed

Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Find the probability of at least one 3 in 8 rolls of a fair die.
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Binomial Problem with n=8 and p=1/2
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P(1<= x <=8) = 1- P(x=0)
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P(at least one 3) = 1 - 8C0(1/2)^0(1/2)^8
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= 1 - 0.0039
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= 0.9961
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Cheers,
Stan H.