BCA

The eligibility for taking admission in St. Joseph's college is:
1. A pass at the +2 level (Karnataka PUC / ISC / CBSE / NIOS / IGCSE / IB) from any recognised board in India or abroad.
2. Candidates who are from non-science stream should have studied any of the following subjects at the +2 level: Mathematics, Computer Science or Electronics.

There are many colleges in Bangalore which give admission in BCA even if you have not taken computer science or math in 12th.

Yes, you can do BCA. The eligibility for BCA is 10+2 pass or in some colleges require maths as a compulsory subject.

1. GD Goenka University, Gurgaon
2. Amritsar College of Engineering and Technology, Amritsar
3. Hindustan College of Arts and Science, Old Mahabalipuram Road, Chennai
4. Meghnad Saha Institute of Technology, Uchhepota, Kolkata
5. Sai Business and Media School, Dehradun.

Best college for BCA in India is Christ University, Bangalore. Top BCA Colleges in India are mentioned at the link provided below. Regards. https://www.shiksha.com/it-software/ranking/top-bca-colleges-in-india/96-2-0-0-0.

There are over 49 BCA colleges in Delhi. Please refer to the link provided below for a detailed list of these colleges. You should be able to navigate to the top colleges in this list using the filters on the web page. Compare colleges on fees, eligibility, placements, and other details. Download colleges brochure, read questions and student reviews and check for admission process followed at each of these colleges at this link. https://www.shiksha.com/it-software/colleges/bca-colleges-delhi.

Hi, all the colleges are pretty good but I would suggest going for IEM if possible. Please see below comparison as well.
Link: https://www.shiksha.com/resources/college-comparison-89287-237660.

Yes, you can if you have maths in HSC.

Yes, there are few colleges which dosen't require maths in 10+2 but if you applying for MCA then you have to study maths in BCA, and its easy to study maths.