There is a widespread understanding that the first 10-15 questions weigh more towards your score than the remaining ones. Here is a comment on the subject that I read on the Business Week website:
"One interesting publication, the 11th edition of The Official Guide for GMAT Review (GMAC, $36.95.), comes out this summer. The GMAC has added a new section entirely devoted to debunking the myths that reportedly continue to cripple many test takers. And who better to hear it from than the people who developed the test?
The best-known legend: that the first 10 items in each section are critical, says Lawrence Rudner, GMAC's executive director for research and development. This is a dangerous belief because too much focus on the first questions prevents many test takers from finishing a particular section, which results in a severe penalty, he says.
Among other myths that Rudner and GMAC hope to expose: the necessity of studying vocabulary lists. "Assuming [you have] a tenth-grade reading level, studying vocabulary lists is totally irrelevant to the GMAT," says Rudner. "There are lists out there, and they're garbage."
I did some additional "research"... My math scores on the 2 PowerPrep tests are 48 and 49 respectively. In total, I have 5 mistakes on the first test and 6 mistakes on the second one. The positions of my mistakes are as follows:
Test 1 (Q48): 3, 10, 11, 31, 34
Test 2 (Q49): 7, 9, 11, 14, 35, 37
So, I have more mistakes in total and more mistakes in the first 15 questions on the second test, but I still have a better score.
Maybe it's not as simple as "Get the first 15 right, moron, or you are doomed to a 2nd tier program!!!" The comment is only meaningful if the PP tests are adaptive. If they are not, and I have just made mistakes on all the hard q's which do not follow a particular order, than you have wasted your time by reading this post
P.S. I am shooting for a second tier program. Just saying it, because I don't want anybody to feel offended...
kayser`soze, check your forum inbox.