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igomit [66]
3 years ago
12

In how many ways can you select five people from a group of nine if the order of selection is important?

Mathematics
1 answer:
Anestetic [448]3 years ago
4 0
If the order of the selection is important we will apply the Arrangements formula A_{n} ^{k}= \frac{n!}{(n-k)!}.
In our case we will have A_{9}^{5}= \frac{9!}{4!} =5*6*7*8*9=15120.
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