Precalculus (6th Edition) Blitzer

Published by Pearson
ISBN 10: 0-13446-914-3
ISBN 13: 978-0-13446-914-0

Chapter 10 - Review Exercises - Page 1125: 73


The value of $_{9}{{P}_{5}}$ = $15,120$

Work Step by Step

We compare the provided expression with the standard form to get $ n=9,r=5$. Put the values into the permutation formula: That is, $\begin{align} & _{9}{{P}_{5}}=\frac{9!}{\left( 9-5 \right)!} \\ & =\frac{9!}{4!} \\ & =\frac{9\times 8\times 7\times 6\times 5\times 4!}{4!} \\ & =15,120 \end{align}$
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.