Let $A=\{1,2,\{3,4\}, 5\} .$ Which of the following statements are incorrect and why ?
$\varnothing \in A$
Let $A=\{1,2,\{3,4\}, 5\} .$ Which of the following statements are incorrect and why ?
$\varnothing \in A$
$A=\{1,2,\{3,4\}, 5\}$
The statement $\varnothing \in A$ is incorrect because $\varnothing$ is not an element of $A$
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