Combination Calculator (nCr)
Calculate combinations using the formula C(n, r) = n! / (r! * (n - r)!). Combinations count the number of ways to choose items where order does not matter.
Inputs
Results
Combinations (nCr)
120
Formula
C(10, 3) = 10! / (3! × 7!)
n!
3,628,800
r!
6
(n-r)!
5,040
Last updated:
Frequently Asked Questions
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