Permutations Calculator (nPr)

Calculate ordered arrangements: how many ways to pick r items from n in order.

n (total items):

r (picked):

How to use

Enter n and r, then click Calculate. Everything runs in your browser — nothing is uploaded or stored.

How many 3-digit codes from 10 digits?

720 — order matters, no repeats.

Permutation vs combination?

Permutations care about order; combinations do not.

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