The following are the minimum subject requirements for NUS, NTU, SMU and SIT courses. Do consider these subject pre-requisites before choosing your subject combination for A Level.

NUS minimum subject requirements

Source: http://www.nus.edu.sg/oam/apply/local/prerequisites/BYA-prerequisites.html

NTU minimum subject requirements

Source: http://www3.ntu.edu.sg/oad2/website_files/ALevel/Min_Subject_Requirements.pdf

SMU minimum subject requirements

Source: http://admissions.smu.edu.sg/apply/admissions-requirements/singapore-cambridge-gce-a-level

SIT minimum subject requirements

Source: http://singaporetech.edu.sg/admission-requirements/admission-requirements