If i want to study MBA in abroad,then what are the qualification i need to have??

It depends in which country you study also. Almost every college asks for gmat score for MBA. And to get admissions into top colleges you must have percentage above 80. Below that percentage also you have good chances. People who got 65 percentages in academics also performed well in gmat, ielts and toefl and got admissions in fairly good colleges. And if you want to study abroad work experience also holds key here. Top colleges will ask for work experience for minimum 2 to 3 years