Maths Spl

I am from ISC board but as far as I know, you can score good marks if you study NCERT.

Yes, you can get admission in MCA without Math in class 12th, because you have completed BCA, so don't worry you can apply.

The undergraduate course focuses on developing mathematical skills in algebra, calculus, and data analysis. Students who are interested in pure Math and are interested in interpreting data, finding patterns, and determining conclusions are good candidates for a B.Sc Mathematics degree.
Scope:
After your graduation from B.Sc Mathematics degree, you can pursue courses like MCA M.Sc. IT, actuarial sciences, MBA or M.Sc. In Mathematics.

The undergraduate course focuses on developing mathematical skills in algebra, calculus, and data analysis. Students who are interested in pure Math and are interested in interpreting data, finding patterns, and determining conclusions are good candidates for a B.Sc Mathematics degree.
Scope:
After your graduation from B.Sc Mathematics degree, you can pursue courses like MCA M.Sc. IT, actuarial sciences, MBA or M.Sc. In Mathematics.

I would suggest you to do Mechanical engineering, because you are good in both Maths and Physics.

I don't think so. You can pursue B.Sc, in any of it's branches, only if you belong to Science background.

Yes, of course it is not necessary to have maths in senior secondary. You are eligible.

Hi, I'm sharing with you the link of all the details related to the university and the eligibility for the course. It doesn't state any specific requirements to be completed in UG. You just need to have a UG degree from an recognized educational board this will fetch you admissions in the university. For much more clarity I suggest you to refer the link: https://www.google.co.in/amp/s/www.shiksha.com/humanities-social-sciences/economics/course/amp/m-a-in-economics-patna-university-168359.