Thinking Mathematically (6th Edition)

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

Chapter 2 - Set Theory - Chapter Summary, Review, and Test - Review Exercises - Page 108: 7


The set is empty.

Work Step by Step

In the given set, $x$ is defined as a number that is less than 4 and at the same time, greater than or equal to 6. Note that a number cannot be both less than $4$ and greater than or equal to $6$ at the same time. Thus, the set is empty.
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