Hello, for admission in bba course there is no such criteria that you should surely have mathematics in 12 standard. The only eligibility criteria is that you shiuld have done 12 in any stream however some mark the minimum percentage to 50% or 60% as cutoff. Some colleges may ask for maths as a subject in 12 but mostly there is no such thing. Here is a list of few colleges for doing bba-
Doons bymusiness school
Christ university
Chandigarh university
LPU

Hope this helps!