Dear Ravikant I would like to add to help Vinaya and for others who will read it: For RC: 1.Your reading speed must be high (this is the opinion of all the GRE tutors) 2. First read and get the mood of the author ( I agree) 3. Then know the crux and go ahead 4. May be few say, first read the questions as well 5. Last but not the least, some times faster typing speed also can add values to your GRE.
For Maths: 1. Study from the same books from which you studied till standard 10th (If possible) or make your own notes. If your notes are gone from your own hands it gets registered to your brain. 2. The direction of GRE must be at the top of mind while studying that Mathematics and while solving Problems. 3. Solve as many question papers, mock up tests, from all the sources (Internet, Barrons, Etc.)