Admission for undergraduation courses- NUS- criteria?

thank you sir for sparing your valuable time and answering my previous question. sir as you informed me, the cutoffs for NUS were 98% - sir i wanted to confirm whether the computation of marks is on all subject basis or as it in india with best 3 and english? Also sir is it that the cut off's vary with different degrees? sir the application is open for international students and thhy give an option of marking 5 degrees of your choice as per preference. Sir does it leave a negative influence if the degrees have deviation from a single subject as in if i apply for computing should i not apply for business studies, another stream of my interest? sir i have been a state/regional level creative writing winner organised by asisc. i have been an active participant of international convention of student quality circles and other international seminars. also i have been active in event organization and dramatics and various other co curriculars at school level. should i include these?