India

Yes, colleges in Madhya Pradesh conduct their counselling on the basis of JEE Mains rank.

You can check here by this link:
https://www.shiksha.com/b-tech/resources/jee-mains-college-predictor

The scenario of asking for changes however is not as easy as it seems, precisely because the forms have information submitted when they took the JEE Main Exam. Post that candidates have qualified for Advanced on the basis of the same forms.
Still you can try change your category. Enter your Registra

Hi Denilson,
The best among private universities in Tamil Nadu is VIT as it offers good placements and exposure. Both the branches Chennai and Vellore are good.
Prefer VIT, Vellore because that is main campus and also considered the best.
After that in terms of placements SRM University main campus is

IEM, Saltlake is the best for BCA because of its placement. Check the placement of IEM's BCA:
http://iem.edu.in/iem-school-of-it/placements/

First of all, there is no BBA without maths, you have to study maths in atleast one semester. You should not worry about your eligibility, you are eligible to seek admission in BBA. You are advised to not afraid of maths, because in all competitions there is presence of maths. Be cool and don't worr