Let $A=\{1,2,\{3,4\}, 5\} .$ Which of the following statements are incorrect and why ?
$\varnothing \subset A$
Let $A=\{1,2,\{3,4\}, 5\} .$ Which of the following statements are incorrect and why ?
$\varnothing \subset A$
$A=\{1,2,\{3,4\}, 5\}$
The statement $\varnothing \subset A$ is correct because $\varnothing$ is a subset of every set.
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