april316 april316

02-07-2016
Mathematics

Answered

There are 15 members of the show choir. In how many ways can you arrange 4 members in the front row when order does not matter?

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ahan151 ahan151

02-07-2016

32760 ways. Because it is a permutation it would be 15!. Which is 151413121110987654321

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03-07-2016

We need to find the number of combinations of the 15 members taken 4 at a time:
\(15C4=\frac{15!}{4!11!}=\frac{15\times14\times13\times12}{4\times3\times2\times1}=1365\)

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