Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)

Published by Pearson
ISBN 10: 0-32184-874-8
ISBN 13: 978-0-32184-874-1

Chapter 14 - Sequences, Series, and the Binomial Theorem - 14.4 The Binomial Theorem - 14.4 Exercise Set: 17

Answer

126

Work Step by Step

$\frac{9!}{4!\times5!}=\frac{5!\times6\times7\times8\times9}{5!\times4!}=\frac{6\times7\times8\times9}{4!}=126$
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