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Discrete-Math · Counting

Permutations of 4 from 7

7,\ 4

Step by step

  1. P(7,4) = \frac{7!}{(7-4)!}

    Ordered selections: n!/(n−k)!.

  2. = \frac{5040}{6} = 840

Reveal the answer
P(7,4) = 840