by JonathanSchneider Sun Dec 07, 2008 12:34 pm
I'm curious as to where you found this strategy, or if it is your own. While most readers will find it appealing/tempting, I think there is a fundamental flaw here:
The GMAT algorithm breaks is such a way that just about all of us will get between 50-60% of the questions correct, no matter our final score. This is because when we get a hard question right, we only get a harder question next. Under your scheme, the overall % correct is more like 76%. The only people to get that many correct are those scoring in the near-800 range.
Consider: if you can in fact get 9 out of your first 10 questions right, how hard are the next questions likely to be? VERY. Why? Because you've shown the GMAT so far that you're capable of any difficulty level. How is it that you are going to somehow get 80% of the next ten right, in less time? If you don't believe me, try it out on one of our practice tests. I imagine you'll have a VERY difficult time with the route recommended above.
A far better strategy is to balance your time overall.