Commerce

BBA is best degree for business management and if you want to complete post graduation , then complete b.com (cheapest option). After , you can pursue MBA. All the best.

Admission happen on basis of cut of list, SRCC is the best college however the cut off is quite high 98-99%, hence you can opt for other DU or IP colleges

You can opt for NCHMCT (April) or oberoi to go ahead for the diploma, as IHM is not o[pen now, you can opt for institutes such as IIHM, UEI global etc

First of all congrats for completing 12th.
These are the following courses:
1.CA
2.CS
3.ICWA
4.B.com-P
5.LAW
6.B.com(Hons.)
7.BBA
8.B.Sc IT
9.BCA
As you have maths and computer you can go for any course among these.You can have a great career if you do hard work.
If you are Interested in maths then you can do CA but only if you are ready to do hard work. If you are interested in computer and maths both then go for B.Sc IT or BCA.Before taking decision first think that what you want to became.
All the best