Browse Questions

# If $A=\{1,3,5,B\}$ and $B=\{2,4\}$, then which of the following is true ?

(A) $4\in A$
(B) $\{4\}\subset A$
(C) $B\subset A$
(D) $B\in A$

$B\in A$ is correct answer.
Because $4\notin A$ and  $\{B\}\subset A$
not B.