Algebra 2 (1st Edition)

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

Chapter 10 Counting Methods and Probability - 10.1 Apply the counting Principles and Permutations - 10.1 Exercises - Skill Practice - Page 687: 23

Answer

1

Work Step by Step

$0! = 1$ as a factorial signifies the multiplication of all natural numbers less than or equal to the argument. Another way to look at this is $(n)! = (n-1)! * n$ thus $1! = 0! * 1$ and $1! =1$. Solving for $0!$ or $0! = 1/1 = 1 $
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