SOLUTION: In how many ways can a doubles game of tennis be arranged from ten boys and twelve girls if each side must have one boy and one girl?
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Question 1168540: In how many ways can a doubles game of tennis be arranged from ten boys and twelve girls if each side must have one boy and one girl? Answer by ikleyn(52778) (Show Source):
The first team (boy,girl) can be arranged in 10*12 = 120 ways.
After that, the second team (boy,girl) can be arranged in 9*11 = 99 ways.
Such teams can be combined in = 60*99 = 5940 different ways for a game. ANSWER
Solved.
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