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 59: 111



Work Step by Step

{x | x is a country in which the percentage having used marijuana $\gt$ 22.2%} From the graph, we can see that no countries fit the criteria. New Zealand has the highest percentage, and it is equal to 22.2%, but it needs to be strictly greater than 22.2%. Therefore, the set is empty: $\{\}$
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