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Statistics Calculators
Permutation Calculator (nPr)
Calculate the number of permutations (nPr) — ordered arrangements of r items chosen from a set of n.
Permutations (nPr)
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About the Permutation Calculator (nPr)
A permutation counts the number of ways to arrange r items chosen from a set of n items when the order matters — arranging {A, B} is different from arranging {B, A}.
Formula: nPr = n! ÷ (n − r)!
Permutations are used to calculate race finish orders, password possibilities, and seating arrangements where sequence matters.
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