B.Sc

Hi Krishna,
It is almost maths from the first semester itself, Physics and Chemistry will appear as an optional subject which is completely up to you whether you want to choose them or not, other are so many other subjects, you can choose instead of them.
Please ask if you need any other assistance.
All the best.

After B.Sc Mathematics, you can pursue M.Sc in Maths, MBA in finance, MCA. You can also target various specialization courses like CA, CFP (Certified Financial Planner), CFA (Chartered Financial Analyst), CS (Company Secretary). One of the most challenging course in India in maths is Actuarial Science. Actuaries job is high paid jobs in the field of financial services.

You can get a job with a degree in B.Sc CS. It's one of the best courses to get a Good job in private sector. But if you want, you should do M.Sc to get a highest paid job. Even I'm a B.Sc CS and currently working as a IT Analyst with TCS :)