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Go Back   Freemason Hirams Travels Masonic Forums > Science & Mathematics > Mathematics

Mathematics Mathematics

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Old 03-20-2008, 01:24 PM
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Very Crazy Difficult Math Problem...Can you do it?

1.Assume that three students are chosen from 3 freshmen, 7 sophomores, and 4 juniors.

What is the probability of selecting 2 freshmen and 1 junior given that at least one freshman will be selected?

2.Assume there are 6 grey females, 5 grey males, 4 white females, and 3 white males. As in the book, the biologist selects two mice randomly.

(a) What is the probability of selecting two males given that both are grey?
(b) What is the probability of selecting 1 mouse of each gender given that both are grey?
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