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JEE Math Practice Question

Let $\mathrm{R}=\{(1,2),(2,3),(3,3)\}$ be a relation defined on the set $\{1,2,3,4\}$. Then the minimum number of elements, needed to be added in R so that R becomes an equivalence relation, is:

  1. A.9
  2. B.8
  3. C.7
  4. D.10

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