B.A Economics

Yes, why not. You've studied all those subjects. So, you can sure chose them as mainstream.

Yes maths marks are mandatory for BA Hons in economics in DU.

Yes, you are eligible to apply with 40% marks. Maths is no required for admission.

History will be better if you are going to prepare for government exams.
All the best.

Anirban, it is really difficult to get admission in Eco Hons. without maths. Economics is a subject which deals with a lot of mathematics. So in my view, please go for another course. There are many courses which are better than Eco Hons. And personally, if by chance you get Eco Hons. without maths, it will become very difficult for you to cope up with the mathematical concepts in Eco Hons.
And in future, it is much better to not opt for Eco Hons. than suffer failure. Go for another course.

It depends on your best four %age of 12th.
DU conducts admission through the merit-based system.
Usually, the cut-offs for Economics Hons. vary from 93-99% in DU.
Every DU college has a different cut-off for different courses.

Hi Lekhana, Please mention all the details clearly from where you applied for B.A. in Economics and English. Every college or university has their different syllabus for each of their courses. So firstly you mentioned that college or university name it helps to easily find their syllabus. And you can get model question papers of these two course on their official website where you applied for these course or you can also search on google.

Hello Charitra,
There re many colleges offering economics in Kolkata. Ramnarain Ruia college is perhaps one of the oldest college and has a good reputation. Its faculty too is reputed to be good. Hence I would definitely rec you to take admission here.