Question

P(16,3) permutation?

Answer 1

Answer: 3360

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Work Shown:

P(n,r) = (n!)/( (n-r)! )

P(16,3) = (16!)/( (16-3)! )

P(16,3) = (16!)/( 13! )

P(16,3) = (16*15*14*13!)/( 13! )

P(16,3) = 16*15*14

P(16,3) = 3360

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Shortcut:

The P(16,3) means we start with 16. Then count down by one until we have 3 items to multiply out.

So we get P(16,3) = 16*15*14 = 3360