Dear,

The two best places in India offering a Bachelor's degree in math are the

1.Indian Statistical Institute (ISI), Bangalore and

2. The Chennai Mathematical Institute (CMI), Chennai.

Indian Statistical Institute offers a Bachelor of Maths degree, and admissions are held after a tough screening test in various centers of India held in late May each year followed by a personal interview at Bangalore. CMI offers a BSc degree in Math and Computer Science, admissions to which is through a written test held in various centers of India in late May each year.

And also here some other best colleges offering bsc mathematics :

1. Loyola college ,chennai Tamilnadu.
2. St.Xavier’s college Mumbai Maharashtra
3. Christ University Bangalore Karnataka
4. Madras christian college chennai Tamilnadu
5. The Oxford college bangalore Karnataka
6. Stella maris college chennai Tamilnadu
7. Fergussion college pune Maharashtra
8. Mount carmel college bangalore Karnataka.

Hope this helps!