Hello Pankaj,
According to the eligibility criteria of the university:
Eligibility:  Candidates must have an aggregate of 45 per cent marks in the qualifying examination.
Mandatory requirement: Mathematics/Business mathematics
Selection criteria: Selection shall be made on the basis of marks obtained in qualifying examination including one language and three best subjects
Good luck!!!!

For any honors degree, it is absolutely essential to include mathematics in your best of 4. Else a deduction of 2.5 % will be done from your percentage and the final percent ( after deduction ) will decide whether you are eligible for the course or not.

Even if you score a 100 % , your admission to the course becomes doubtful if a deduction of 2.5% is levied.

Hence , it would be absolutely benefitical if you try and score good marks in mathematics such that it can be included in your best of four.

All the best.

Hope you got the answer you are looking for thank-you.