Figure from the original question paper Figure from the original question paper There are 11 courses offered in a program. Few courses require other courses to be completed as a prerequisite. The below table gives the prerequisite of all courses. All prerequisites of a course must be completed before opting for that course in any semester. There is no constraint on how many courses a student can take in a semester. Figure from the original question paper Select the order of courses that can be opted by a student if he/she wishes to complete all 11 courses in minimum number of semester. Parenthesis represents all courses opted in the same semester.