Anyone who's good at and interested in Maths and wants to score in an elective should consider MH1812: Discrete Mathematics (3AU), assuming you're not from SCSE. It is a Core module for Computer Science and Computer Engineering students, and is offered every single semester. In Semester 1, Computer Science students take it as a Core module and the cohort is very large (500+ students). In Semester 2, Computer Engineering students take it as a Core module so the cohort is much smaller (150-170 students). (Correct me if I'm wrong) Plenty of past year exam papers available online for practice, and to see if you like the module. Best thing is that lectures AND tutorials are optional, attendance is not taken. Essentially, just study well for 2 Midterms and the Final Examination; super flexible in terms of commitment.
On a side note, I'm looking for Unrestricted Electives that are either Mathematically/Business/Quantitatively/Statistically related, does anyone have any recommendations? (Besides BU8201/BU8401 and Economics modules)