Answer
$25$
Work Step by Step
Using the diagram: $n(A)=15+3+5+2=25$
(Add all the numbers inside the circle that represents set $A$.)
Precalculus: Concepts Through Functions, A Unit Circle Approach to Trigonometry (3rd Edition)
by Sullivan III, Michael
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: 15
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