Answer: Reflexive, symmetric and transitive.
- A Reflexive and symmetric only
- B Symmetric and transitive only
- C One-one and onto
- D Reflexive, symmetric and transitive
Correct answer: D. Reflexive, symmetric and transitive
Explanation: All three properties together define an equivalence relation.
Concept context
Types of relations, equivalence classes, one-one and onto functions, composition, and invertible functions