Combinations

Order does not matter

Number of things (n):
Taking (r) at a time:
Calculate

Permutations with Repetition

Order does not matter, there are some repeated items

Number of things (n):
Repeated items (separate by comma, number of times repeated for each item):
For example, if there is one item repeated 2 times and one item repeated 3 times, type "2,3"
Calculate