Answer
12
Work Step by Step
Since the person is buying a unit AND a keyboard AND a printer, we use the multiplication rule: there are 3(2)(2) = 12 distinct systems.
Discrete Mathematics with Applications 4th Edition
by Epp, Susanna S.
Published by
Cengage Learning
ISBN 10:
0-49539-132-8
ISBN 13:
978-0-49539-132-6
Chapter 9 - Counting and Probability - Exercise Set 9.2 - Page 536: 8
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