2 years ago

Use the permutation formula below to find the number of outcomes when n = 5 and r = 2.

Mathematics

1 answer:

faltersainse [42]2 years ago

8 0

$nPr = \frac{n!}{(n - r)!}$

$5P2 = \frac{5!}{(5 - 2)!} = \frac{5 \times 4 \times 3 \times 2 \times 1}{3 \times 2 \times 1} = 20$

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