You should understand that this is not a homework service nor is it a tutorial service.
PLease either post some of your own work on this problem or explain what you do not understand about the question.
Let A := {1,2,3}. Give an example of a relation (A, A, R) that is
(a) Transitive and reflexive but not antisymmetric.
(b) Antisymmetric and reflexive but not transitive
(c) Antisymmetric and transitive but not reflexive
Anyone have any ideas?