A group of 5 boys and 10 girls is lined up in random order-that is, each of the 15! permutaions is assumed to be equally likely.(adsbygoogle = window.adsbygoogle || []).push({});

a) What is the probability that the person in the 4th position is a boy?

b) What is the probability that a particular boy is in the 3rd position?

i tried to list out 1 possible combination but it gets pretty ugly since there are a total of 15 choices.. can someone please help?

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# Homework Help: Question on permutation.

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