reflexive relation

Question

Comments

let A={a,b,c}

R1={(a,a),(b,b),(c,c),(a,b)..}     // it is reflexive(given)

R2={(a,a),(b,b),(c,c),(c,a)...}  // it is reflexive(given)

R1UR2={(a,a),(b,b),(c,c)...} // it is reflexive.

R1∩R2={(a,a) (b,b),(c,c)..} // it is also reflexive .

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reflexive relations are closed under $\cup \; \text{ and} \; \cap$

Answer 1

Option C

Reflexive relations are closed under union and intersection.