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Question

Let A={x:xR,|x|<2},B={x:xR,|x2|2} and AB=RC, then the set C equals

A
{x:2<x2}
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B
{x:2x4}
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C
{x:2x<4}
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D
None of these
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Solution

The correct option is D None of these
A={x:xϵR,|x|<2}={x:xϵR,2<x<2}
B={x:xϵR;|x2|<2}={x:xϵR,0<x<4}
AB={x:xϵR;0<x<2}=R{x:xϵR;0>x;x>2}
C={x:xϵR;x>2orx<0}

1136024_1142857_ans_5e1cfe744cdf494cb998de91957e95df.jpg

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