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Question

With reference to a universal set, the inclusion of a subset in another, is relation, which is


  1. Reflexive only

  2. None of these

  3. Symmetric only

  4. Equivalence relation


Solution

The correct option is B

None of these


Since A A . Relation ' ' is relfexive 

Since A B , B C

Relation '  ' is transitive. 

But A ' ' B , B   A . relation is not symmetric. 

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