There are various options available out there for you. If you consider the trend and future market too then i would suggest you to take up Bsc IT.

You are good with Computers too then you can choose BCA.

I am listing down few options for you:

Engineering

Architecture

Aviation

Merchant Navy

National Defence

Ethical Hecking

Computer Application & IT

Hi Chandan

You could take maths in combination with any of PCM, PCB, COmmerce or Humanities. Depending on whcih stream you take in class 12, you have different options available to you. If you only want those that are centered around Maths, you could go for a BSc in Mathematics or Statistics. Some top colleges like ISI and CMI offer this option, and is a viable career choice these days.

Hope this helps!