You can pursue your Masters in IT, Computer Science, Statistics, Acturial Sciences. Then you have MCA, MBA. You also can think of studying CA, CS, CFA, CFP,etc. And then you always have M.Sc in Mathematics that you can pursue. The various specialisations that you can opt for after B.Sc in Mathematics might be:

• Financial Mathematics
• Social Research Methods and Statistics
• Mathematical Trading and Finance
• Mathematics and Computing in Finance
• Statistics with Applications in Medicine
• Operational research and Finance
• Applied Mathematical Modelling and Scientific Computing