A) \[A\subseteq B\]
B) \[B\subseteq A\]
C) \[A=B\]
D) None of these\[\]
Correct Answer: C
Solution :
Let\[x\in A\Rightarrow x\in A\cup B\], \[[\because A\subseteq A\cup B]\] Þ \[x\in A\cap B\], \[[\because A\cup B=A\cap B]\] Þ \[x\in A\]and \[x\in B\] Þ \[x\in B\], \\[A\subseteq B\] Similarly, \[x\in B\]Þ \[x\in A\], \\[B\subseteq A\] Now \[A\subseteq B,\,\,B\subseteq A\] Þ \[A=B\].You need to login to perform this action.
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