Probability

Permutations with Repetition

Compute n! / (n₁! × n₂! × … × nₖ!) for arranging n items when some are identical. Enter the total count and comma-separated group sizes.

Live Calculator · Step-by-Step · Probability
Inputs
Example: n=7 with groups 3,2,2 means 3 identical of one type, 2 of another, 2 of another.
Result
Result
Enter values and calculate.

Step-by-Step Work

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Item Groups Visualization