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: 15



Work Step by Step

As we are required to calculate the number of configurations, and order doesn't matter, we need to use combinations. This problem is solved by multiplying ($3_{C_{1}}$) ways for amplifiers, ($2_{C_{1}}$) CD players, and ($5_{C_{1}}$) speaker models. So $3_{C_{1}}$*$2_{C_{1}}$*$5_{C_{1}}$= 3*2*5 = 30
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