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: 124

Answer

Makes Sense

Work Step by Step

There are specific and countable numbers of countries. So these can be expressed as Rooster method.
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