Calculators > Discrete Mathematics > nPr Calculator

nPr Calculator

Find the Permutations:
P(n,r) where:
n =
r =
P(1,1) = 1! / (1 - 1)! =
1
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Will calculate the permutations for P(n,r) = n! / (n - r)!. "The number of ways of obtaining an ordered subset of r elements from a set of n elements."[1]

For r <= n, n >= 0, and r >= 0.

Permutations Formula:

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

References

[1] For more information on permutations and combinations please see http://mathworld.wolfram.com/Permutation.html