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Let S be the set of all real numbers. A ...

Let S be the set of all real numbers. A relation R has been defined on S by a Rb`rArr|a-b| le 1`, then R is

A

relexive an transitive but not symmetric

B

an equivalence relation

C

symmetric and transitive but not reflexive

D

reflexive and symmetric but not transitiv

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The correct Answer is:
D
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