Answer
The statement is false.
The set has 4 subsets.
Work Step by Step
The set $\{3, \{1, 4\}\}$ has 2 elements: $3$ and $\{1, 4\}$.
Therefore, the set has $2^2=4$ subsets.
The statement is false.
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 70: 112
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