Thinking Mathematically (6th Edition)

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 104: 34

Answer

$22$

Work Step by Step

To find the number of respondents who disagreed with the statement, the cardinalities outside set A must be added together. The Venn diagram shows the following cardinalities outside Set A: $8, 2, 3, 9$. Thus, the number of respondents who disagreed with the statement is: $=8+2+3+9 \\=22$
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