Calculate the number of permutations nPr = n! / (n - r)!
Calculate the number of permutations nPr = n! / (n - r)!
Total number of items.
Number of items to arrange.
The number of ways to arrange r items from n distinct items where order matters.
How this calculator works
The number of ways to arrange r items from n distinct items where order matters.
Common questions about this calculator
