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more probability

by aditikedia » Sun Jul 20, 2008 8:47 am
A six sided die with faces numbered one through six is rolled twice. What is the probability that the face with the number 2 on it will not be facing upward on either roll?
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by pepeprepa » Sun Jul 20, 2008 10:07 am
P(not to have2) = P(not to have 2 at the 1st roll) x P(not to have 2 at the 2nd roll)
P(not to have2) = 5/6 x 5/6=25/36
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