Permutation & Combination Calculator

Compute permutations (order matters) and combinations (order does not) for integers n and r.

Inputs

nPr = n! / (n−r)!
nCr = n! / (r!(n−r)!)

n and r must be integers with 0 ≤ r ≤ n ≤ 170.

Category: Math

P = 720 · C = 120.