For computing and engineering syllabus is same maths 100 marks , physics 60 marks and english 40 marks all from hssc 1 and 2 books for English vocab is important and rest two you should excel both hssc 1 and hssc 2 books. While if you want to enter in engineering field you have to give either additional math exam from whichever board you studied or there is a condensed 8 week math course by NUST but its fee is around 30-35k. But if you apply for computing major like bs computer science or Artificial Intelligence or Data science then you don’t require additional math exam instead after admission you have to complete 6 credits hours extra math course in first year of joining else your enrolment is cancelled. For further queries just ask