Hi Vignesh

After completing B.Sc, you will be a graduate. So you have more freedom to decide your future studies. After B.Sc, doing M.Sc will make you expert in your field. But you can also opt for other courses also based on your interest. You can do MBA, MCA or anything you want which fall under your eligibility criteria and your skills. If you do M.Sc after your B.Sc, You can do a PhD in Maths and further research. If you're interested in research, apply for M.Sc. Otherwise, you can do any other professional courses for your career opportunities.

All the best.