Calculate the number of combinations nCr = n! / (r! * (n - r)!)
Calculate the number of combinations nCr = n! / (r! * (n - r)!)
Total number of items.
Number of items to choose.
The number of ways to choose r items from n distinct items where order does not matter.
How this calculator works
The number of ways to choose r items from n distinct items where order does not matter.
Common questions about this calculator
