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: 33

Answer

A ∪∅ = { 1,3,5,7}

Work Step by Step

A ∪∅ U = {1,2,3,4,5,6,7} A = { 1,3,5,7} The set A ∪∅ represents all elements of A and elements of ∅ (∅ represent empty set). Therefore the elements of A ∪∅ are 'A' elements only i.e. 1,3,5,7 A ∪∅ = { 1,3,5,7}.
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