Re: Probability question

On Sun, 01 Oct 2006 15:53:35 -0700, Luke Wu wrote:


A pair of dice, one red and one white, are rolled two successive times.

a) What is the probability that the sum of the two dice is the same on
both rolls?
b) What is the probability that the sum of the two dice is greater on
second roll?

<snip>
if the answer to a) is p, then the answer to b) is 0.5*(1-p). There are
three cases: the total is the same, the first sum is greater, the second
sum is greater; bu symmetry the second two have the same probability.

Duncan

.

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