simple-squiggle/node_modules/mathjs/docs/reference/functions/permutations.md

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Function permutations

Compute the number of ways of obtaining an ordered subset of k elements from a set of n elements.

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

Syntax

math.permutations(n)
math.permutations(n, k)

Parameters

Parameter Type Description
n number | BigNumber The number of objects in total
k number | BigNumber The number of objects in the subset

Returns

Type Description
number | BigNumber The number of permutations

Throws

Type Description

Examples

math.permutations(5)     // 120
math.permutations(5, 3)  // 60

See also

combinations, combinationsWithRep, factorial