Essentials of Statistics (5th Edition)

Published by Pearson
ISBN 10: 0-32192-459-2
ISBN 13: 978-0-32192-459-9

Chapter 4 - Probability - 4-6 Counting - Page 180: 1

Answer

The ! symbol means factorial. The actual number of ways 4 people stand in line is 24.

Work Step by Step

To find the number of ways that 4 people can stand in line is to do 4!. This means multiply 4 by each decreasing whole number until you reach zero. So $4\times3\times2\times1$= 24.
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