Answer
$n !=n \cdot(n-1) \cdot(n-2) \cdot(n-3) \cdots \cdot 3 \cdot 2 \cdot 1$
Work Step by Step
n! represents the product of all integers from 1 to n.
$n !=n \cdot(n-1) \cdot(n-2) \cdot(n-3) \cdots \cdot 3 \cdot 2 \cdot 1$
Discrete Mathematics and Its Applications, Seventh Edition
by Rosen, Kenneth
Published by
McGraw-Hill Education
ISBN 10:
0073383090
ISBN 13:
978-0-07338-309-5
Chapter 2 - Section 2.4 - Sequences and Summations - Exercises - Page 170: 44
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