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29 March, 00:36

A school dance committee is to consist of 2 freshmen, 3 sophomores, 4 juniors, and 5 seniors. if 7 freshmen, 9 sophomores, 7 juniors, and 8 seniors are eligible to be on the committee, in how many ways can the committee be chosen?

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  1. 29 March, 00:47
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    2 out of 6 freshmen

    3 out of 7 sophomores

    4 out of 7 juniors

    5 out of 8 seniors

    the number of ways you can get 2 out of 6 freshmen is c (6,2) = 15

    the number of ways you can get 3 out of 7 sophomores is c (7,3) = 35

    the number of ways you can get 4 out of 7 juniors is c (7,4) = 35

    the number of ways you can get 5 out of 8 seniors is c (8,5) = 56

    the total number of ways you can get 2 freshmen and 3 sophomores and 4 juniors and 5 seniors is therefore 15 * 35 * 35 * 56 = 1,029,000.
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