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: 87

Answer

a. yes b. no

Work Step by Step

$A = \{x|x ∈ N$ and $6 \leq x \lt 10\}$ $B = \{x|x ∈ N$ and $9 \lt x \leq 13\}$ Expressed using the roster method: $A = \{6, 7, 8, 9\}$ $B = \{10, 11, 12, 13\}$ a. Those sets are equivalent as they have the same number of elements. b. Those sets aren't equal, as their elements are not all the same.
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