B.Com

If you want to pursue your career in management or want to open your own startup then BBA is the best option. After that, if you a pursue an MBA it will be a very good choice but if you like accounts, finance and want to make a career in a field related to this, you must go for B.Com. After that, you can go for CA, CS, M.Com and MBA in finance as these are some of the good career options after B.Com.

Yes you can pursue correspondence MCA after b.com but you must have math in 10+2 level or in graduation if you dont have math in your 10+2 level then you can do BCS -012 course simultaneously with pursing MCA.If you have any more query you may ask.

Yes, there is maths in B.Com. Nothing is difficult if you study well. But, maths is not compulsory in B.Com (I guess). But I would suggest you to take maths as that would be beneficial for you.
Good luck!

After completing your graduation, you can go for further studies like Master's degree or MBA. You can also go for a job related to your studies or you can prepare for government job exams like:
1. IBPS PO.
2. SSC CGL or other competitive exams.
Government jobs are a really good option for you. As we all know the perks and benefits of government jobs.
You can check the below-mentioned link for SSC CGL preparation:
goo.gl/nHTcwO