Precalculus: Concepts Through Functions, A Unit Circle Approach to Trigonometry (3rd Edition)

Published by Pearson
ISBN 10: 0-32193-104-1
ISBN 13: 978-0-32193-104-7

Chapter 12 - Counting and Probability - Section 12.1 Counting - 12.1 Assess Your Understanding - Page 867: 18



Work Step by Step

$A$ and $B$ means the elements are both in $A$ and $B$. The intersection of two sets is the set of elements that are in both sets. Add all the numbers in regions that are comon to $A$ and $B$. Using the diagram: $n(A\cap B)=3+5=8$
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