i) All 5 are subsets of AxA Hence all are relations on A ii) All are mappings from A to A iii) Only i, iii and v are one to one relations iv) i, ii , iii and iv are all onto relations. v) All 5 vi) I and III are reflexive vii) i, II, III and IV, v are symmetric ix) i, iii are equivalence x) v is singleton Solution i) All 5 are subsets of AxA Hence all are relations on A ii) All are mappings from A to A iii) Only i, iii and v are one to one relations iv) i, ii , iii and iv are all onto relations. v) All 5 vi) I and III are reflexive vii) i, II, III and IV, v are symmetric ix) i, iii are equivalence x) v is singleton.