Permutations & Combinations

Compute factorials, permutations, and combinations (with and without repetition) using BigInt.

Inputs

n (total)

r (selected)

Results

n! (10!): 3628800
P(n, r) — permutations: 720
C(n, r) — combinations: 120
Permutations with repetition (n^r): 1000
Combinations with repetition (n+r-1 C r): 220