Algebra and Trigonometry 10th Edition

Published by Cengage Learning
ISBN 10: 9781337271172
ISBN 13: 978-1-33727-117-2

Chapter 11824 - 11.6 - Counting Principles - 11.6 Exercises - Page 824: 33

Answer

$_{12}P_2=132$

Work Step by Step

$_nP_r=\frac{n!}{(n-r)!}$ $_{12}P_2=\frac{12!}{(12-2)!}=\frac{12\times11\times10!}{10!}=132$
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