Given the relation `R={(1,\ 2),\ (2,\ 3)}` on the set `A={1,\ 2,\ 3}` , add a minimum number of ordered pairs so that the enlarged relation is symmetric, transitive and reflexive.

Explanation

We have,
$$ R=\{(1,2),(2,3)\} $$



`R` can be a transitive only when the elements `(1,3)` is added




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