Can my son take the entrance exam conducted by this institute for BBA if he didn't opt for maths in HSC?

You can't do BBA at Anil Surendra Modi School of Commerce, NMIMS without CUET because this university doesn't accept CUET scores for admission. Instead, you'll need to take the NMIMS-NPAT entrance exam to be eligible for the BBA program.

 The BBA programme is offered for 3-4 years.

Anil Surendra Modi School of Commerce, NMIMS, offers a full-time BCom at the UG level. Candidates seeking admission to the programme are required to fulfil the eligibility criteria specified by the institute. As per the eligibility criteria specified for BCom admission, candidates must have passed Class 12 with a minimum aggregate of 50% and Mathematics/ Statistics as mandatory subjects. Hence, it is compulsory for aspirants to have studied either Maths or Statistics at the Class 12 level to be eligible for BCom admission at Anil Surendra Modi School of Commerce.

Yes, Anil Surendra Modi School of Commerce does offers BSc course at undergraduate-level. The bachelor's degre is offered only in one specialisations BSc in Finance. Admission to the Anil Surendra Modi School of Commerce BSc course is subject to the valids score in the NPAT exam conducted by Narsee Monjee Institute of Management Studies (NMIMS). 

Anil Surendra Modi School of Commerce MSc in Finance is offered in a full-time mode. The course is inclusive of Financial Accounting & Analysis, Business Economics, Business Law, Cost and Management Accounting, Taxation – Direct and Indirect, Capital Market and Portfolio Management, Strategic Cost Management, and, more.