Permutations & Combinations Calculator
Compute Permutations (nPr), Combinations (nCr), and Homogeneous Combinations (nHr) with factorial steps
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Calculate probability choices. Compute major combinatorics formulas with step-by-step factorial fraction breakdowns.
How to use
- Input the total number of items (n) and the number of chosen items (r).
- Select the calculation mode (Permutation, Combination, Homogeneous, etc.).
- Inspect the precision values computed via BigInt arithmetic and copy the output.
FAQ
- What is the difference between Permutations and Combinations?
- Permutations consider the order of selection to be important (ordering matters), whereas Combinations do not care about the order of selected elements (grouping only).