hi,

see gre exam is not only needed for abroad admission any more, some indian  mba institute want gmat or gre score also for admission in mba or pgdm course.

now coming to mba in abroad admission necessary things:

you need to have a full time  graduate degree in any discipline

it will be good if you have 2-3 years of work experience and also a letter of recommendation from your supervisor or managers .

you need to appear in two type of test

1. business management aptitude test- gmat or gre, depends on the institution which you may want to study.

2. language proficiency test- toefel/ielts

hope it would help.