Geometry: Common Core (15th Edition)

Published by Prentice Hall
ISBN 10: 0133281159
ISBN 13: 978-0-13328-115-6

Chapter 13 - Probability - Chapter Review: 18

Answer

$840$

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 evaluate the factorial in the numerator and the factorial in the denominator, and then divide: $$\frac{7!}{3!}=\frac{7\times6\times5\times4\times3\times2\times1}{3\times2\times1}=7\times6\times5\times4=840$$
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