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Question

If A={x  R:|x|<2} and B={x  R:|x2|3} then : 


Your Answer
A
AB=[1,2]
Correct Answer
B
BA=R(2,5)
Your Answer
C
AB=R(2,5)
Your Answer
D
AB=(2,1)

Solution

The correct option is B BA=R(2,5)
A={x:x  (2,2)}
B={x:x  (,1][5,)}
AB={x:x (2,1]}
BA={x:x (,2][5,)}
AB={x:x (1,2)}
AB={x:x (,2)[5,)}

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