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Answer to Question #23745 in Statistics and Probability for Polly

Question #23745
A group consists of 15 people: 5 Americans, 6 Canadians and 4 Mexicans.

(a) In how many ways can a sub-group of 4 people be selected?







(b) In how many ways can a sub-group of 4 people consist of all Canadians?







(c) What is the probability that a sub-group will consist of all Canadians?







(d) In how many ways can a sub-group of 4 people consist of 2 Canadians and 2 Mexicans?







(e) In how many ways can a sub-group of 4 consist of 1 American, 1 Mexican and 2 Canadians?

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