Precalculus: Concepts Through Functions, A Unit Circle Approach to Trigonometry (3rd Edition)

Published by Pearson
ISBN 10: 0-32193-104-1
ISBN 13: 978-0-32193-104-7

Chapter 12 - Counting and Probability - Section 12.2 Permutations and Combinations - 12.2 Assess Your Understanding: 9

Answer

$P(4,4) = 24$

Work Step by Step

Use the formula $P=\dfrac{n!}{(n-r)!}$ to obtain: $\require{cancel} P(4,4) \\=\dfrac{4!}{(4-4)!} \\=\dfrac{4(3)(2)(1)}{0!} \\=\dfrac{24}{1} \\=24$
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