Permutation & Combination Calculator

Calculate permutations and combinations. Essential for probability, statistics, and counting problems.

n (Total Items)

r (Selected Items)

Calculation Type

Result

720

FormulaP(10,3) = 10! / (10-3)!

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Formula

Permutation: P(n,r) = n!/(n-r)!, Combination: C(n,r) = n!/(r!(n-r)!)

Calculate probability of single events, combined events (AND/OR), permutations, and combinations.

Calculate factorial (n!) and double factorial (n!!). Useful for permutations, combinations, and mathematical calculations.

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