Hello,

If you want to join BSC in mathematics which is graduation degree three years course. And the fees will differ for every colleges. Like for goverment college fee's lower then any private colleges. You have to choose and apply for it. May be some of college starting there admission process. I'll provide you a link below you can check it for more details about the college

https://university.careers360.com/colleges/list-of-bsc-in-mathematics-degree-colleges-in-india

All the best.