B.Com

There is not much of a difference. You may choose to go for any one of them.

Yes, maths is a compulsory subject to take in B.Com (H).

As you have completed MBA with operations and marketing, I would suggest you opt for either two jobs to get the most out of a job. Everyone will give preference to your MBA and not to your graduation degree, so find a job either in operations or marketing.

Hello, MBA in insurance is a promising field to pursue. But having said this the question remains, why you want to do an MBA in insurance. If you are interested in insurance and have prior knowledge then go for it. Else, keep exploring other fields like marketing, strategy, finance, operations, IT m

It depends a lot on what area of the banking space would you be keen.
For a job in the back office of a bank, a B.Com/M.Com should be fine. However, for management level opportunity, you should pursue MBA in finance/marketing & try for an internship in a bank as a part of your MBA project.