Combinations (nCr): 535,983,370,403,809,591,296
For n = 100, r = 20, the combinations (ncr) is 535,983,370,403,809,591,296.
Combinations (nCr)
535,983,370,403,809,591,296
Formula
nCr = n! ÷ (r! × (n - r)!)
Frequently Asked Questions
What is the combinations (ncr) for n = 100, r = 20?
535,983,370,403,809,591,296.