Function combinations

Compute the number of ways of picking k unordered outcomes from n possibilities.

Combinations only takes integer arguments. The following condition must be enforced: k <= n.

Syntax

combinations(n, k)

Parameters

Parameter Type Description
n number | BigNumber Total number of objects in the set
k number | BigNumber Number of objects in the subset

Returns

Type Description
number | BigNumber Number of possible combinations.

Examples

combinations(7, 5); // returns 21

See also

permutations, factorial