Thread: relation problem

hey guys
please help me! i have stuck for a long period of time. can anyone teach me how to find a binary relation on Z(251) that is reflexive, symmetric, antisymmetric, and transitive?

thanks in advance!

cheers

This problem sounds suspicious, but if this is indeed what it is supposed to say, here is a hint: what is a reflexive, symmetric, and antisymmetric relation on any set?