2018-04-17 20:28:35 +03:00

525 B

Combinations

When the order doesn't matter, it is a Combination.

When the order does matter it is a Permutation.

"My fruit salad is a combination of apples, grapes and bananas" We don't care what order the fruits are in, they could also be "bananas, grapes and apples" or "grapes, apples and bananas", its the same fruit salad.

Combinations without repetitions

Combinations with repetitions

References

Math Is Fun