Hello there,
Yes, anyone can apply for BSc Nursing. It's a very good and demanding course. The basic eligibility criteria for this course is -
The candidates should have passed their 10+2 level, from a recognised board, with atleast 50% aggregate in Physics, Chemistry, Biology, and English as main subjects.
I'm sorry to inform you that with maths and CS you cannot apply for BSc Nursing, you need to have PCB combination in your 10+2 level.
Hope this answer helps you.
Good luck!!