which degree should be completed to do m.b.a.

You will have to complete a Bachelors Degree in the stream of your choice to pursue an MBA. Also prepare for entrance exams since most B Schools consider these test scores for admission. There are also some schools like ISMT Mumbai that admit students without an entrance test, based purely on their

You need to complete 10+2+3 or 10+2+4 means you must be undergraduate in any discipline

bachelors degree in any stream be it BA or BSc or BCom etc