Science and maths options?
You can do your B.Sc in Maths, or B.Sc in any of the science subjects viz., Biology, Chemistry of Physics.
Later you can do your M.Sc for higher studies with a specialisation of your choice, and for further research studies you could take up M.Phil and Ph.D courses.
You may also take up teaching job, after your graduation and post graduation.
Alternatively, after B.Sc you can do your MBA, if you are interested and feel that getting in to management cadre of a company would be good for you.
Some students, who are creative and have an artistic flair, could take up B.Sc Animation that gets you in to the field of computer graphics, which is a fast growing career option in the country.
Other options are getting in to Pharmacy with courses like B.Pharm or Pharm D.
You can also get in to medicine (MBBS) or Dental Science (BDS).