Geometry: Common Core (15th Edition)

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

Chapter 13 - Probability - Chapter Review - Page 872: 18



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: $$\frac{7!}{3!}=\frac{7\times6\times5\times4\times3\times2\times1}{3\times2\times1}=7\times6\times5\times4=840$$
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.