Precalculus (6th Edition) Blitzer

Published by Pearson
ISBN 10: 0-13446-914-3
ISBN 13: 978-0-13446-914-0

Chapter 10 - Section 10.1 - Sequences and Summation Notation - Exercise Set - Page 1050: 77


The expression $ n!$ can be calculated as $ n!=\left( n \right)\cdot \left( n-1 \right)\cdot \left( n-2 \right)\cdot ...\cdot 3\cdot 2\cdot 1$.

Work Step by Step

According to the definition of the factorial of any positive number, $ n!=\left( n \right)\cdot \left( n-1 \right)\cdot \left( n-2 \right)\cdot ...\cdot 3\cdot 2\cdot 1$ That means we get the product of the numbers from 1 to $ n $. Point to be noted $0!=1$.
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