College Algebra (10th Edition)

Published by Pearson
ISBN 10: 0321979478
ISBN 13: 978-0-32197-947-6

Chapter 10 - Section 10.1 - Counting - 10.1 Assess Your Understanding: 21

Answer

5

Work Step by Step

In order to count all of the elements that are in A and B and C, we have to add up the numbers that are in the intersection of the three sets. This means: $ n(A\cap B\cap C)=5$
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