[quote="kiwihaze111"]
What is the size of the GMAT real exam question bank approximately? Is the question bank big enough to sufficiently give a range of difficulty questions based on ones actual level? I wonder given that I have taken the exams so many times with low scores that perhaps I have exhausted a large proportion of the easier questions? Could that be possible?
[quote]
GMAC or the other testing organizations will not normally reveal the size of the question bank for many good reasons.
Each standardized test has a defined margin of statistical error. To maintain this margin, the question bank has to be of corresponding size. This will normally mean that the size of the question bank will be quite large given the range of testtakers and the number of times the test is taken by each testtaker.
Since GMAC allows a testtaker to take up to eight instances of the test, it can also be assumed that the size of the question bank will be sufficiently large to accommodate these attempts. It is not realisric to believe that a testtaker has "exhausted a large proportion of the easier questions". The test would be unreliable in that case.