Permutation Calculator (nPr)
Calculate permutations (nPr) instantly. Find how many ways to arrange r items from n items when order matters. Free permutation calculator.
Formula
P(10, 3) = 10! / (10 - 3)!
Number of Permutations
720
Explanation: There are 720 ways to arrange 3 items from 10 items when order matters.
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