Answer
false
Work Step by Step
$\{1, 4\} \not\subset \{4, 1\}$
This is false, as these sets are equal.
A set cannot be a proper subset of a set that it is equal to.
Thinking Mathematically (6th Edition)
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0321867327
ISBN 13:
978-0-32186-732-2
Chapter 2 - Set Theory - 2.2 Subsets - Exercise Set 2.2 - Page 68: 52
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