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: 5

Answer

$\left\{1, 2, 3, ..., 28, 29, 30\right\}$

Work Step by Step

$N$ is the set of counting or natural numbers. Natural numbers are $1, 2, 3, ...$ The value of $x$ is less than or equal to 30. This means that the possible values of $x$ are $1, 2, 3, ...28, 29, 30$. The roster method lists down all the elements of the set. Thus, writing the given set using the roster method gives: $\left\{1, 2, 3, ..., 28, 29, 30\right\}$
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