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Question

If R is the relation from set A={1,3,4,5} to B={1,5} defined as R={(x,y)R:y>x}, then

A
Domain of R={1,3,4}
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B
Range of R={5}
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C
R1={(5,1),(5,3),(5,4)}
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D
n(AB)=1
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Solution

The correct options are
A Domain of R={1,3,4}
B Range of R={5}
C R1={(5,1),(5,3),(5,4)}
A={1,3,4,5},B={1,5}
R={(1,5),(3,5),(4,5)}
Domain ={1,3,4}
Range ={5}
R1={(5,1),(5,3),(5,4)}
(AB)={1,5}
n(AB)=2

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