Posted by **Anonymous** on Friday, March 22, 2013 at 3:09pm.

Suppose there is a bag containing 25 envelopes and 10 of the envelopes contain prizes. You reach in, without looking, and select 2 envelopes, without replacement.

a) What is the probability that both of your picks are winner?

b) What is the probability that none of your picks is a winner?

c) what is the probability that at least one of your picks is a winner?

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