College Algebra (6th Edition)

Published by Pearson
ISBN 10: 0-32178-228-3
ISBN 13: 978-0-32178-228-1

Chapter 8 - Sequences, Induction, and Probability - Exercise Set 8.5 - Page 760: 86

Answer

$6840$

Work Step by Step

By plugging in the given values: $\frac{20!}{17!}=\frac{20\cdot19\cdot18\cdot17!}{17!}=20\cdot19\cdot18=6840$
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