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Which of the following statements is false?

Answer and explanation

Correct answer: Every symmetric relation is reflexive

The key distinction is between symmetry and reflexivity. Symmetry requires that (a,b) in R imply (b,a) in R. Reflexivity requires that (a,a) belong to R for every a in the underlying set. These conditions are independent: the empty relation is symmetric because it has no counterexample, but on a non-empty set it is not reflexive. The universal relation is both symmetric and reflexive, and the identity relation is also symmetric because each pair (a,a) equals its own reverse. Since a symmetric relation can lack all self-pairs, the claim that every symmetric relation is reflexive is false. Therefore option A is correct.

Related tags

Symmetric RelationReflexive RelationConceptual McqFalse StatementRelations And FunctionsMathematicsClass 12 Mcq

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