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In the following,state whether $A=B$ or not : $A=\{a,b,c,d\},B=\{d,c,b,a\}$

$\begin{array}{1 1}(A)\;A=B\\(B)\;A\neq B\end{array}$

Elements of A is exactly equal to elements of B
$\therefore A=B$
Hence (A) is the correct answer.
answered May 23, 2014