Beat The GMAT a GMAT & MBA community

There are few threads in BTG that has links for free resources.

I found this useful:
http://readyforgmat.com/math/documents/AdvancedGMATMathQuestions-version2.pdf

First step would be to analyze where you are going wrong, whether it is Quant or Verbal. Secondly, I would look at which section within Quant or Verbal. This would give a better idea of which section you want to attack to gain maximum score in your GMAT. Rather than attacking higher end tough problems, you may even realize that the basics maybe OFF. So, you need to really breakdown your scores before you make a decision.

I have a small doubt in a CR question:

Student enrollment at Central High School has declined in each of the past five years by an average of 7.9 percent, although graduation rates have risen. Therefore, the school should focus less on graduation rates and more on trying to attract new students.

The answer to which of the following questions would most likely point out the illogical nature of the conclusion drawn above?

1)What would be the consequences of an increased student dropout rate?

2)What is the average age of students applying to study at Central High School?

3)Are students applying at other high schools more academically committed?

4)Where are graduation rates of regional high schools compiled?

5)How would the school budget be affected by a new student recruitment program?