Thinking Mathematically (6th Edition)

Published by Pearson
ISBN 10: 0321867327
ISBN 13: 978-0-32186-732-2

Chapter 2 - Set Theory - 2.3 Venn Diagrams and Set Operations - Exercise Set 2.3 - Page 81: 66



Work Step by Step

We are given: $U = \{a, b, c, d, e, f, g, h\}$ $A = \{a, g, h\}$ $B = \{b, g, h\}$ $C = \{b, c, d, e, f\}$ We need to determine $(A\cup B)\cap B'$ The union of sets $A$ and $B$ ($A\cup B$) is a set containing all distinct elements that are present in either $A$ or $B$. $A\cup B=\{a, b, g, h\}$ The complement of $B$ ($B'$) is a set that contains every element of $U$ that isn't contained in $B$. $B'=\{a, c, d, e, f\}$ Finally, $\cap$ indicates that the resulting set should have all distinct elements of one set that are also present in the other. $(A\cup B)\cap B'=\{a, b, g, h\}\cap\{a, c, d, e, f\}=\{a\}$
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