Answer
$25.$
Work Step by Step
According to the picture: $n(\overline{A\cup C})=20+2+5+1+6+0+4+20-n(A\cup C)=20+2+5+1+6+0+4+20-(20+2+6+1+0+4)=58-33=25.$
Precalculus (10th Edition)
by Sullivan, Michael
Published by
Pearson
ISBN 10:
0-32197-907-9
ISBN 13:
978-0-32197-907-0
Chapter 13 - Counting and Probability - Chapter Review - Review Exercises - Page 868: 8
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