Find the Difference Age Between x, y And X ?

Let X be that set of all citizens of India. Elements x, y in X are said to be related if the difference of their age is 5 years.

Which one of the following is correct ?

  1. The relation is an equivalence relation on X.
  2. The relation is symmetric but neither reflexive nor transitive.
  3. The relation is reflexive but neither symmetric nor transitive .
  4. None of the above .
haripriya Default Asked on 27th July 2015 in Maths.
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