Elementary Statistics (12th Edition)

Published by Pearson
ISBN 10: 0321836960
ISBN 13: 978-0-32183-696-0

Chapter 4 - Probability - 4-6 Counting - Basic Skills and Concepts - Page 182: 27



Work Step by Step

Because the order is not important, we can use the combination rule to determine the number of possibilities: $\frac{5!}{(5-2)!2!}=10$ $\frac{5!}{(5-3)!3!}=10$ $\frac{5!}{(5-4)!4!}=5$ $\frac{5!}{(5-5)!5!}=1$ The sum:$ 10+10+5+1=26$
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