Algebra and Trigonometry 10th Edition

Published by Cengage Learning
ISBN 10: 9781337271172
ISBN 13: 978-1-33727-117-2

Chapter 11 - 11.6 - Counting Principles - 11.6 Exercises - Page 825: 84


True. In fact, the formula $n!$ for the number of permutations is obtained from the Fundamental Counting Principle.

Work Step by Step

First choice: $n$ possibilities. Second choice: $n-1$ possibilities. Third choice: $n-2$ possibilities. ... Last choice: 1 possibility. Total permutations: $n\times(n-1)\times(n-2)\times...\times1=n!$
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