For a genuine math lover, Mathematics and Computing program at IIT Guwahati is a literal treat. You need to be proficient in Math to take up this course. The syllabus includes core math concepts combined with knowledge of CS as well. Towards the end, the math is confined to statistics and finance. The syllabus is not very flexible initially but becomes so in the last two semesters.
Here are a few pros and cons pertaining to the course
Pros:
Cons
In the near future when the IT industry will be at its peak, MnC might be better than CSE in terms of monetary benefits. If you aren’t certain about your area of interest, then Maths and Computing are definitely better than all core branches except CS.