How many permutations of 1, 2, 3, 4, 5, 6, 7 are not derangements?

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Discrete and Combinatorial Mathematics An Applied Introduction

ISBN: 978-0201726343

5th edition

Authors: Ralph P. Grimaldi

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Question Posted: Jun 21, 2016 08:38 AM

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How many permutations of 1, 2, 3, 4, 5, 6, 7 are not derangements?

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There are 7 5040 permutations of 1 2 3 4 5 ...View the full answer

Discrete and Combinatorial Mathematics An Applied Introduction

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