Thinking Mathematically (6th Edition)

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

Chapter 2 - Set Theory - 2.1 Basic Set Concepts - Exercise Set 2.1 - Page 60: 119


See below.

Work Step by Step

The three methods of representing sets are: 1) by Word Description. E.g. S is the set of positive integers that are less than $4$. 2) by the Roster Method. E.g. $S=\{1,2,3\}$. 3) by the Set-Builder Notation. E.g. $S=\{x|\text{ x is an integer less than $4$}\}$
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