Answer
$40320$
Work Step by Step
$_nP_r=\frac{n!}{(n-r)!}$, hence here: $_8P_7=\frac{8!}{(8-7)!}=\frac{8!}{1!}=8!=40320$
Algebra 2 (1st Edition)
by Larson, Ron; Boswell, Laurie; Kanold, Timothy D.; Stiff, Lee
Published by
McDougal Littell
ISBN 10:
0618595414
ISBN 13:
978-0-61859-541-9
Chapter 10 Counting Methods and Probability - 10.1 Apply the counting Principles and Permutations - 10.1 Exercises - Skill Practice - Page 687: 33
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