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20-07-2022
Mathematics

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

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20-07-2022

[tex]nPr = \frac{n!}{(n - r)!} [/tex]

[tex]5P2 = \frac{5!}{(5 - 2)!} = \frac{5 \times 4 \times 3 \times 2 \times 1}{3 \times 2 \times 1} = 20[/tex]

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