Combinations and Permutations Calculator

Combinations and Permutations Calculator. nCr and nPr calculations. Fast, accurate, private.

Independent events A and B.

P(A)

P(B)

P(A and B)0.120000

P(A or B)0.580000

n (combinations)

nCr

120

C(n, r) = n! / (r!(n−r)!)

Steps

Calculate combinations (nCr) and permutations (nPr) for counting problems.

Are results official?

No — quick estimates only. Confirm with your bank or provider.

Is data saved?

No. Calculations run in your browser.

Where is the full tool?

Each satellite links back to the main hub calculator.