Hello Pranav Jha

Some of the best colleges for Maths BSc. in India are mentioned-

• Delhi university
• Miranda house
• Sri Venkateshwar college (South campus) -Fee-13,510/yr.
• Hindu college
• Archarya Narendra Dev college
• Sri Guru Tegh Bahadur khalsa college
• St. Stephens college
• Sri Guru Govind Singh college
• Hans Raj college
• Ramjas college
• Kirori Mal  college
• Indraprastha college
• Gargi college

Hope it helps you.