If A × B = {( a , x ), ( a , y ), ( b , x ), ( b , y )}. Find A and B.

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Solution

A×B={ ( a,x ),( a,y ),( b,x ),( b,y ) }

Here, all the first elements should be from set A and all the second elements of A×B should be from set B .

Therefore, A={ a,b } and B={ x,y } .

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