Algebra 2 (1st Edition)

Published by McDougal Littell
ISBN 10: 0618595414
ISBN 13: 978-0-61859-541-9

Chapter 13, Trigonometric Ratios and Functions - 13.2 Define General Angles and Use Radian Measure - 13.2 Exercises - Mixed Review - Page 865: 67

Answer

840

Work Step by Step

We know the following equation for permutations: $$nP_r=\frac{n!}{(n-r)!}$$ Thus, we find: $$\frac{7!}{\left(7-4\right)!}=840$$
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