The GRE is a computer-adaptive test, or CAT for short. Every test taker will see a least two Math sections and two Verbal sections. The difficulty level of the second section (easy, medium or hard) in each subject is determined by your performance on the first section. If you get lots of questions right on the first section, you will get a harder second section, but access to higher scores. If you don’t get as many questions right on the first section, you will get an easier second section and your scoring potential is capped at a lower range.
The computer-delivered GRE is the standard format for test takers. The paper-based GRE is far more rare and only offered up to three times a year. But if you want to learn more about the paper-and-pencil test, visit ETS.org .