Permutation Calculator
Ordered arrangements nPr.
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Results
- Permutations nPr
- 720
- With repetition (n^r)
- 1,000
- Combinations nCr
- 120
- Ratio P/C
- 6
Quick answer
A permutation counts arrangements where order matters: nPr = n!/(n−r)!.
nPr = n! / (n − r)!
How to use the Permutation Calculator
- 1Enter the total number of items.
- 2Enter how many you are arranging.
- 3Compare with combinations if order does not matter.
Frequently asked questions
Permutation or combination?
Permutation when order matters (podium places), combination when it does not (lottery).
What is nP0?
1 — there is one way to arrange nothing.