# Permutation Notations

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The number of ways to arrange seven objects in a row is . The arrangements are called permutations. Combinatorialists use two notational systems for permutations.

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Contributed by: Ed Pegg Jr (March 2011)

Open content licensed under CC BY-NC-SA

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"Permutation Notations"

http://demonstrations.wolfram.com/PermutationNotations/

Wolfram Demonstrations Project

Published: March 7 2011