Combination Formula: Combination = The number of different ways that x items can be picked from a set of size y

Combination Definition Our combination calculator will allow you to calculate the number of combinations in a set of size n. A combination describes how many sets you can make of a certain size from a larger set. For example, if you have 5 numbers in a set (say 1,2,3,4,5) and you want to put them into a smaller set (say a set of size 2), then the combination would be the number of sets you could make without regard to order. With a combination the set [1,2] would be the same as the set [2,1]. If order does matter, then you should use a permutation. We also have a permutation calculator that you use to find out the permutation.

How to Calculate Combination Let's be honest - sometimes the best combination calculator is the one that is easy to use and doesn't require us to even know what the combination formula is in the first place! But if you want to know the exact formula for calculating combination then please check out the "Formula" box above.