Jyoti, there are quite a few Entrance examinations for MBA. All these entrance examinations need qualification as a Bachelor's degree in any discipline. Now students who are in their final year of graduation also can appear for these entrance examinations. But their admission is provisional meaning only if they pass their Graduation and score the minimum required aggregate required for the entrance examination, will their admission be made complete. So even if you are in your 3rd year of BA, you can still appear for MBA entrance examinations.