Permutation & Combination Calculator
Calculate nPr (permutations) and nCr (combinations) with full formula display. Enter n and r to get both values instantly.
How to Use Permutation & Combination Calculator
The Permutation & Combination Calculator computes both nPr (permutations) and nCr (combinations) from your n and r values. Permutations count ordered arrangements while combinations count unordered selections. Enter the total number of items (n) and items to choose (r), and instantly see both results with the formulas used. This is essential for probability problems, statistics homework, lottery calculations, and any scenario involving counting arrangements or selections. The tool handles large numbers using BigInt for precise results.
Step-by-Step Instructions
- Enter n (total number of items)
- Enter r (number of items to choose)
- Click Calculate to see both nPr and nCr
- View the formulas and copy results
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