Hi buddy I will tell you here difference between GRE and GMAT entrance exam so that you can have idea.

Here is the difference between GRE and GMAT

GRE
GRE entrance exam is General admissions test for a wide variety of graduate programs.

GMAT
And GMAT entrance exam is for MBA programs.


GRE®
The GRE exam Section is adaptive exam: for both the verbal and quantitative portions of the test you will take two separate sections.

Your performance on the first section of each type will determine the difficulty level of the second section that you receive.

GMAT
The GMAT exam is Computer adaptive exam:
Questions get harder as you get more correct, easier as you get more incorrect.

Timings of the exam
GRE®
Two 30-minute essay sections
Two 30-minute verbal sections
Two 35-minute math sections

GMAT
Two 30-minute essay sections
One 75-minute math section
One 75-minute verbal section

Scoring of GMAT exam
GRE®
One Essay score (0-6)
One Verbal score (130-170)
One Math score (130-170)

GMAT
One Essay score (0-6)
One Verbal/Math combined score (200-800)