Is Motilal Nehru College, DU good for B.Sc.(honours) maths?

Yes, Motilal Nehru College (MLNC) is good for pursuing a B.Sc. Honours degree in Mathematics. 

There are many benefits like:

• You don't have to worry about your internal exam marks, as they are checked by the faculty members.
• The faculty of Mathematics is very cooperative, friendly and oftentimes lenient.
• The student crowd is really enthusiastic and competitive. You will study amongst some of the brightest minds in the country.
• The overall ambience of the college is very welcoming and devoid of any kind of discrimination.

However, always keep in mind that the college does not matter much, it is your performance that will define you and help you build your career further.