Permutation & Combination Calculator
Enter n and r and you'll get both nPr (permutations, where order matters) and nCr (combinations, where it doesn't) at the same time. Handy for probability problems, counting arrangements, or checking your manual calculation.
How to use
- Enter n (the total number of items) and r (how many you're choosing).
- You get nPr automatically - that's the number of arrangements when order matters, like ranking.
- nCr is shown too - that's combinations, where you just care about which items are picked, not the order.
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