College Algebra 7th Edition

Published by Brooks Cole
ISBN 10: 1305115546
ISBN 13: 978-1-30511-554-5

Chapter 9, Counting and Probability - Section 9.1 - Counting - 9.1 Exercises - Page 659: 85

Answer

48

Work Step by Step

Think of the two algebra books as 1 book. There are now 4 books to be arranged on a shelf, and there are 4! = 24 ways to arrange them. Since the two algebra books can change places (for example AB and BA), there are 2 * 24 = 48 ways to arrange the books.
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