Enter a number to choose from (n) and a number chosen (k) to calculate the
permutations.
Permutation is a selection of a certain number of objects from a group
with an
order. For example, if you have to choose 2 letters from A, B and C,
then the permutations (how many times you can select 2 different letters with
order) can be 6 since the order does matter. It can be AB, AC, BC, BA, CA and
CB.
The formula to calculate the permutations is :
P(n,k) = n! / (n-k)!