JEE Math Practice Question
Let R1 = {(a, b) $$\in$$ N $$\times$$ N : |a $$-$$ b| $$\le$$ 13} and R2 = {(a, b) $$\in$$ N $$\times$$ N : |a $$-$$ b| $$\ne$$ 13}. Then on N :
- A.Both R1 and R2 are equivalence relations
- B.Neither R1 nor R2 is an equivalence relation
- C.R1 is an equivalence relation but R2 is not
- D.R2 is an equivalence relation but R1 is not
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