Mathematics, 05.08.2019 20:30, tommyewall34

There are 3 math clubs in the school district, with 5, 7, and 8 students respectively. each club has two co-presidents. if i randomly select a club, and then randomly select three members of that club to give a copy of "introduction to counting and probability", what is the probability that two of the people who receive books are co-presidents?

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There are 3 math clubs in the school district, with 5, 7, and 8 students respectively. each club has...