Algebra and Trigonometry 10th Edition

by Larson, Ron

Published by Cengage Learning

ISBN 10: 9781337271172

ISBN 13: 978-1-33727-117-2

Chapter 11 - 11.6 - Counting Principles - 11.6 Exercises - Page 823: 23b

Answer

$648$ three-digit numbers are possible.

Work Step by Step

First digit: 9 choices Second digit: 9 choices Third digit: 8 choices Using the Fundamental Counting Principle: $9\times9\times8=648$

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