Thinking Mathematically (6th Edition)

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

Chapter 5 - Number Theory and the Real Number System - Chapter Summary, Review, and Test - Review Exercises: 91

Answer

$2 \div 3 = \frac{2}{3}$ ,which is not a natural number. Thus, the natural numbers are not closed with respect to division.

Work Step by Step

RECALL: The natural numbers are $1, 2, 3, ...$. Note that $2 \div 3 = \frac{2}{3}$, which is not a natural number. Thus, the natural numbers are not closed with respect to division.
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