B.Sc Maths

Hi Abhjeet,
Surprisingly, you want to do BSC (Hons) now at this age.
Happy to know this.
Yes, you are eligible to study further. There is no age bar.
Just out of Curosity : Do you want to further study due to passion or to enhance your career further ?
If it is for career I have a different suggestion. Let me know.

Yes, you can get admission in the Punjab University, since this is a private university.

Check this link:-https://www.shiksha.com/university/dr-harisingh-gour-vishwavidyalaya/dhsgsu-uget-exam

The course offered by BIT Mesra is M.Sc (Math and Computing) not B.Sc (Math and Computing), however, exit option is available after 3 years. Admission for M.Sc course is based on marks obtained by the candidates in Class 12th / equivalent qualifying examination. Hostel accommodation is available for all students in general. We will be happy to hear from you in case of any more queries. Please visit BIT Mesra website www.bitmesra.ac.in for more details.

You can take statistics with B.Sc. hons Maths.stats is related to Maths and scope is too high.

You have a very Brilliant rank so you have a greater chance of getting the main campus

The best college for B.Sc Maths (H) is Deen Dayal College and there are no other college better than this in Delhi for B.Sc Maths (H).