Elementary Statistics: A Step-by-Step Approach with Formula Card 9th Edition

Published by McGraw-Hill Education
ISBN 10: 0078136334
ISBN 13: 978-0-07813-633-7

Chapter 4 - Probability and Counting Rules - 4-4 Counting Rules - Exercises 4-4: 20

Answer

120 possible combinations

Work Step by Step

No. of Phone models = 4 No. of colors = 6 No. of calling plans = 5 Possible combinations = 4 x 6 x 5 = 120
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