Permutations
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Permutations

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Permutation is the act of arranging the members of a set into a sequence of order. One way of visualizing permutations is to say that we're going to take these elements of the set, which are unordered, and we're going to place them in a sequence slots.

The number of permutations of n elements is equal to n factorial. n factorial is the product of all integers from 1 all the way up to n.

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