Let's face the facts though, if you go through the GMAT and leave 4-5 questions, you obviously didn't dedicate the time to taking this test seriously. The GMAT is not supposed to be a walk in the park, its a grueling grinding experience of getting 3 months of studying done leading up to 4 hours that determine whether you end up at Harvard or University of Tampa (not that there is anything wrong with Tampa, I love the city, just making a point). IF you don't want to tank the test don't leave out 4 questions. 1 or 2 questions is heard of and an honest mistake, so by no means am I saying anything to offend the author of this topic, clearly his given situation is different as he still managed to score as high as he did. Just the facts.