Answer
$7$
Work Step by Step
A and C, or in mathematical notation $A\cap C$, means the set of all elements that are in both sets A and C.
Using the diagram, we have:
$n(A\cap C)=1+6=7$
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 - Chapter Review - Review Exercises - Page 888: 6
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