Algebra and Trigonometry 10th Edition

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: 24d

Answer

$4500$ four-digit numbers are possible.

Work Step by Step

First digit: 9 choices Second digit: 10 choices Third digit: 10 choices Fourth digit: 5 choices: $0,2,4,6,8$ Using the Fundamental Counting Principle: $9\times10\times10\times5=4500$
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