UPSC NDA I 2024 Mathematics Paper

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Question : 23 of 120

Marks: +1, -0

Let R be a relation on the open interval (−1,1) and is given by $R=\{(x, y):|
x+y|< 2\}$. Then which one of the following is correct?

R is reflexive but neither symmetric nor transitive
R is reflexive and symmetric but not transitive
R is reflexive and transitive but not symmetric
R is an equivalence relation

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