# Chapter 13 - Probability - Mid-Chapter Quiz - Page 843: 11

$3,024$

#### Work Step by Step

To evaluate a factorial expression, we multiply the number by each of the preceding integers until we get to $1$. We simplify the factorial in the numerator and in the denominator, and then divide: $\frac{9!}{5!}=\frac{9\times8\times7\times6\times5\times4\times3\times2\times1}{5\times4\times3\times2\times1}=9\times8\times7\times6=3,024$

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