Answer
$_{9}P_{5}=15,120$
Work Step by Step
$_{n}P_{r}=\frac{n!}{(n-r)!}$
$_{9}P_{5}=\frac{9!}{(9-5)!}=\frac{9\times8\times7\times6\times5\times4!}{4!}=9\times8\times7\times6\times5=15,120$
Elementary Statistics: Picturing the World (6th Edition)
by Larson, Ron; Farber, Betsy
Published by
Pearson
ISBN 10:
0321911210
ISBN 13:
978-0-32191-121-6
Chapter 3 - Probability - Section 3.4 Additional Topics in Probability and Counting - Exercises - Page 174: 7
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