Let $A=\{1,2,\{3,4\}, 5\} .$ Which of the following statements are incorrect and why ?
$1 \subset A$
Let $A=\{1,2,\{3,4\}, 5\} .$ Which of the following statements are incorrect and why ?
$1 \subset A$
$A=\{1,2,\{3,4\}, 5\}$
The statement $1 \subset A$ is incorrect because an element of a set can never be a subset of itself.
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