A) Reflexive
B) Symmetric
C) Transitive
D) An equivalence relation
Correct Answer: B
Solution :
(1, 1)(2, 2)(3, 3)(4, 4) \[\in R\]; \ R is reflexive. \[\because \] (1, 2) (3, 1)\[\in R\]and also (2, 1)(1, 3) \[\in R\]. Hence, R is symmetric. But clearly R is not transitive.
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