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# Let $A=\{1,2,\{3,4\},5\}$.Which of the following statements are incorrect and why?$\{3,4\}\subset A$

$\begin{array}{1 1}(A)\;\text{Correct}\\(B)\;\text{Incorrect}\end{array}$

$\{3,4\}$ is element of A not subset
$\therefore$ the given statement is incorrect
Hence (B) is the correct answer.