# Chapter 11 - Further Topics in Algebra - 11.4 The Binomial Theorem - 11.4 Exercises: 24

36

#### Work Step by Step

$9$C$7$ is equivalent with following expression: $\binom{9}{7} =\frac{9!}{7!\times (9-7)!}=\frac{7!\times8\times9}{7!\times2!}=\frac{8\times9}{2\times1}=36$

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