Thinking Mathematically (6th Edition)

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

Chapter 2 - Set Theory - 2.2 Subsets - Exercise Set 2.2 - Page 68: 5

Answer

{Monday, Friday} ⊄ {Saturday, Sunday, Monday, Tuesday, Wednesday}

Work Step by Step

As 'Friday' of the first set is not present in the second set. Therefore {Monday, Friday} ⊄ {Saturday, Sunday, Monday, Tuesday, Wednesday}
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