Precalculus (6th Edition) Blitzer

Published by Pearson
ISBN 10: 0-13446-914-3
ISBN 13: 978-0-13446-914-0

Chapter 10 - Section 10.6 - Counting Principles, Permutations, and Combinations - Exercise Set - Page 1105: 75


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A permutation is an ordered arrangement of items that occurs when (i) No item is used more than once. (ii) The order of the arrangement makes a difference. The formula for computing permutations is given as: $P(n,r)=\dfrac{n!}{(n-r)!}$
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