Free Online Calculator .net

Need a calculator for school, work or home? Tell me what you want and I'll build it here.

Web	FreeOnlineCalculator.net

Combinations Calculator (nCr)

Will calculate the combinations for C(n,r) = n! / r! (n - r)!. "The number of ways of picking r unordered outcomes from n possibilities." [1]

For r <= n, n >= 0, and r >= 0. Limited to values of n = 100 or less.

Find the Combinations:
C(n,r) where:
n =
r =

C(1,1) = 1! / 1! (1 - 1)! = 1

Combinations Formula:

C(n,r) = n! / r! (n - r)!

[1] For more information on combinations and binomial coefficients please see http://mathworld.wolfram.com/Combination.html