Answer
does not make sense
Work Step by Step
The regions outside the "Smokers" will already represent the non-smokers.
Thinking Mathematically (6th Edition)
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0321867327
ISBN 13:
978-0-32186-732-2
Chapter 2 - Set Theory - 2.5 Survey Problems - Exercise Set 2.5 - Page 106: 53
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