Guru Gobind Singh Indraprastha University

Both institutions are best but i suggest you. IP university for b. Ed because IP university is semi govt. And in IP university placement was good and colleges also

https://www.shiksha.com/it-software/course/master-of-computer-application-lateral-entry-guru-gobind-singh-indraprastha-university-dwarka-Delhi-274003
For lateral entries issues of MCA in IPU, you can follow the link above.

Yes, maths is a compulsory subject.

Qualification: Pass in 10+2, A Level, IB, American 12th grade or equivalent with Physics, Mathematics and English as compulsory subjects along with Chemistry or Biotechnology or Biology or any technical vocational subjects as optional with a minimum of 50% marks taken together in Physics, Mathematics and any one of the .

Please visit ipu.ac.in to get notices if the counseling has yet started or not, but your rank is very low so please don't keep hopes very high.

Hi,
Firstly, you have to apply by online mode and then the entrance exam will be there according to which your college will be assigned to you.
Thank you.

Hi!
In my preference DTU is a good college, rest you can compare colleges in the given link below. On the basis of fees infrastructure and many more comparative issues. Link- https://www.shiksha.com/resources/college-comparison.