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Permutations and combinations

14 April, 2015 - 16:51

What is the difference between a combination and a permutation?

The essential difference between a combination and a permutation has to do with the order in which objects are selected.

A combination focuses on the selection of objects without regard to the order in which they are selected. A permutation, in contrast, focuses on the arrangement of objects with regard to the order in which they are arranged.