Given the relation \( R=\{(1,2),(2,3)\} \) on the set \( A=\{1,2,3\} \), the minimum number of o...

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Given the relation \( R=\{(1,2),(2,3)\} \) on the set \( A=\{1,2,3\} \), the minimum number of ordered pairs which when added to \( R \) make it an equivalence relation, is
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