Four students have to be chosen 2 girls as the captain and vice-captain and 2 boys as captain and vice-captain of the school. There are 15 eligible girls and 12 eligible boys. In how many ways can they be chosen if Sunita is sure to be the captain?
Since the order matters in the selection (presidente, vice-president), you have to use permutations: Since 1 girl has been selected we only need P(14, 1) girls and P (12,2) boys.and multiply the product of the result: P(14,1) * P(12,2) = 1848
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Torobravo
1 year, 1 month ago