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Home  >>  JEEMAIN and AIPMT  >>  Mathematics  >>  Class11  >>  Sets
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If $A\:and\:B$ are two sets such that $(A-B)\cup B=A$, then what can you say about $A\:and\:B$?

$\begin{array}{1 1} A\subset B \\ B\subset A \\ A=\phi \\ B=\phi \end{array}$

Can you answer this question?

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Ans- (B)
We know that $(A-B)\cup B=A\cup B$
But given that $(A-B)\cup B=A$
$\Rightarrow\:A\cup B=A$
$\Rightarrow B\subset A$
answered May 4, 2013 by rvidyagovindarajan_1
edited May 17, 2014 by rohanmaheshwari0831_1

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