_scienceStatisticCombinationWithoutRepetition

Get the number of k-combinations from n given elements. The mathematic formula is n! / (k!(n-k)!)

Prototype :

fun [I I] S

I : n, with n < 170.
I : k, with k < n.

Return : S a new string number or nil if error

See also :

_scienceStatisticCombinationWithRepetition

Example :

Note :