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

User Stimpson Cat
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nPr = (n!)/((n - r)!)


5P2 = (5!)/((5 - 2)!) = (5 * 4 * 3 * 2 * 1)/(3 * 2 * 1) = 20

User Seburdis
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