In how many ways can four people sit in a row of five chairs?

1 Answer
George C.
May 2, 2018

120

Explanation:

In exactly as many ways that 5 people can, since any fifth person would only have one choice of chair - the empty one.

So the number of ways that 4 people can sit in 5 chairs is:

5 xx 4 xx 3 xx 2 = 5 xx 4 xx 3 xx 2 xx 1 = 5! = 120

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