combin

Number of unordered selections (combinations) of k from n.

Syntax

v = combin(number, number_chosen)

Description

Returns n! / (k! · (n-k)!) — the binomial coefficient. Order doesn’t matter and items don’t repeat.

Examples

combin(8, 2)    % 28
combin(52, 5)   % 2598960   (poker hands)

See also

• combina — Combinations with repetition allowed.
• permut — Number of ordered selections (permutations) of k from n.
• fact — Factorial.