Accounting & Commerce

If you have a Bachelor's degree you are eligible, otherwise you'll need professional work experience of at least 4 years.

Yes, but you will face many problems.

The level of CS is same at both places. You can pursue CS from anywhere, you'll receive the same level of knowledge.

Yes, why not. Having a knowledge of maths till class 10 is very important. Simple mathematical operations are required, such as addition, substraction, multiplication and division.

Students with commerce background and with 40% in 12th are eligible to apply for this course.

You can pursue B.Sc in maths only when you have science stream in 12th mainly mathematics and minimum of 50-60 % to be eligible for admission in programme. So now you will not be able to pursue as you have commerce in your 12th. Please choose different options for your career perspective.

See there are various colleges under CAT. Some of the top colleges are IIMs, FMS, MDI, IMT, JBIMS, IMI, SP Jain, few IITs, KJSIMSR, Great lakes, TAPMI, GIM-Goa, FORE, LBSIM, XIMB, etc.

No, you can't do it because you don't have science stream so I would like to suggest you go for CLAT. It will be different from the subjects or streams which you don't like.

You have worked as a bank manager. It's a great thing and after seeing your profile I must suggest you that you have to take a chance with international business because nowadays in this field, such opportunities are available and amount of interested students in this field are really low. So, you have 90% chance to be successful in this field
And the answer to your question, it depends on your own budget. If your budget is more than 30 Lacs then I must suggest you that you go abroad.