What is the permutations formula?

P(n,r) = n! / (n-r)!. Order matters.

What is the difference from combinations?

Permutations consider order (AB ≠ BA). Combinations do not.

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Calculate P(n,r) — the number of ways to arrange r items from n with order. Uses n!/(n-r)!.

n (total items)

r (arrange)

What is the permutations formula?: P(n,r) = n! / (n-r)!. Order matters.
What is the difference from combinations?: Permutations consider order (AB ≠ BA). Combinations do not.
Is this tool free?: Yes. All tools on QuickFreeTools are free with no signup.

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