BCA

https://www.shiksha.com/it-software/course/bachelor-of-computer-applications-bca-christ-hour-road-Bangalore-247058
Here is the complete details about this college along with all the charges and fees structure.

PITM - Prajnanananda Institute of Technology and ManagementBachelor of Computer Applications (BCA Hons.)1.35 Lakh
Pailan College of Management and Technology - PCMTBachelor of Computer Application2.08 Lakh
Techno India, HooghlyBCA (Hons)1.52 Lakh

Eligibility
The applicant must pass H. S. or equivalent examination from any stream with Mathematics as one of the subject. The College may set cutoff marks whenever it seems to be reasonable or may hold admission test for the final selection of candidates. Students who are not from H. S. Science stream will have to take up a bridge course in addition to the normal courses in the last semester. Eligibility criteria of M. C college.

https://www.shiksha.com/it-software/articles/top-specialisations-you-can-opt-for-after-bca-blogId-12966
Here is the blog which you can refer for your further future career.

https://www.shiksha.com/science/colleges/m-sc-mathematics-colleges-india
Here is the list of the colleges offering M.Sc. In Mathematics. You can refer the link to know all the details like eligibility and fee structure.

Under the reservation criteria for NEET 2019, the certificate for the PwD candidate must be issued from either one of the following:15% of these seats are reserved for Scheduled Castes, 7.5% for Scheduled Tribes, and 27% for OBC candidates.

The admissions in BIT Mesra Noida in BCA course are based on marks obtained by the candidates in Class 12th. So no entrance exam for BCA admissions. The eligibility criteria for BCA is minimum 50% of marks at 10th and 12th level. Candidate must have studied Mathematics at 12th level.
The candidates having 70% and above can easily get admission in BCA course.
For admission, you have to register first at the official website of BIT Mesra.
bitmesra.ac.in

Hello Chandra,
I think so. Normally speaking there is no condition of eligibility regarding year of passing of graduation. However, to help you I am attaching a link that will give you all the required information about different facets of this course. https://www.shiksha.com/b-ed-chp