COMEDK Exam 2014 Solved Paper

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Question : 124 of 180

Marks: +1, -0

If A={1,2,3,4}, then which one of the following is reflexive?

{(1,1),(2,3),(3,3)}
{(1,1),(2,2),(3,3),(4,4)}
{(1,2),(2,1)(3,2),(2,3)}
{(1,2),(1,3),(1,4)}

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