Combinations

Combinations(k, n)

«n» choose «k». The number of unique ways that «k» items can be chosen from a set of «n elements (without replacement and ignoring the order).

Library

Advanced math

Example

Combinations(2, 4) → 6

They are: {1,2}, {1,3}, {1,4}, {2,3}, {2,4}, {3,4}

See Also

• Permutations
• Factorial
• LGamma