Statistics & Probability
Combinations & Permutations Calculator
Lets users solve and check combinations & permutations instantly with formula, steps and examples — no manual math.
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Your result
Permutations nPr
720
P(10,3) = 720; C(10,3) = 120
Combinations nCr
120
About this calculator
Permutations count ordered selections: nPr = n!/(n−r)!. Combinations count unordered selections: nCr = n!/(r!(n−r)!). Order matters for permutations, not combinations.
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