Thinking Mathematically (6th Edition)

Published by Pearson
ISBN 10: 0321867327
ISBN 13: 978-0-32186-732-2

Chapter 11 - Counting Methods and Probability Theory - 11.2 Permutations - Exercise Set 11.2: 30

Answer

6720

Work Step by Step

$\frac{8!}{(8-5)!}$ Step 1: (8-5)! = (3)! Step 2: $\frac{8!}{3!}$ = $\frac{8*7*6*5*4*3!}{3!}$ Since 3! is in the numerator and the denominator, cancel 3! 8*7*6*5*4 = 6720
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