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 incorrect because, $\varnothing$ is a subset of $A$ and it is not an element of $A.$
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