Answer
1 --> 2
2 --> 1
1 --> 3
3 --> 1
1. Not Reflexive
2. Symmetric
3. Not Transitive
Work Step by Step
Counterexample for reflexive property: There are no pairs of the form (a, a) in R4, so the relation is not reflexive.
Counterexample for transitive property: (1, 2) and (2, 1) are included in R4, but (1, 1) is not, so the relation is not transitive.
