Elementary Statistics (12th Edition)

Published by Pearson
ISBN 10: 0321836960
ISBN 13: 978-0-32183-696-0

Chapter 4 - Probability - 4-6 Counting - Basic Skills and Concepts - Page 183: 36



Work Step by Step

There are 9 digits, 8 possibilities for the first and 2 possibilities for the second number, so by using the fundamental counting rule we can get the number of possibilities: $8\times2\times9=144$.
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