When I studied, I was did sets of problems, usually 10 or so, before I looked at the answer and explanation. It was just too much of a pain to flip back to the back of the book after every problem.

If you're still learning new concepts, then definitely stick with one subject the whole time. And not just within the overall section, but within a question type. For example, only do SC questions all at once or probability questions. This really helps you solidify the concept in your head.

After you've gone through all the concepts, then it makes sense to do more random practice by throwing random question types in front of you. This is a better simulation of the test and is better used once you get closer to G-Day.

Thanks! Wok, I am going to finish my MGMAT books, then move through the OG's one section at a time. I did that for RC and it worked since my hit rate went up around 30%.

Since you have already done some work on the various subjects and should have your strategies down, here are some thoughts on using the Official Guide.

Oh, and in addition to the points below, don't forget that you should try to never write in the OG -12 not only can you sell it later, but more importantly you will be getting better practice for test day when you cannot write on the screen. And as to the computer screen, it can be a good idea to actually have your book propped up vertically (such as with a cookbook stand). I have gotten lots of feedback from my students that having the reading comp or the sentence correction vertical as opposed to horizontal actual feels different.

Anyway, Enjoy!

Practicing using the GMAT Official Guide:

Instead of doing the problems in order from front to back or doing large chunks of problems from a particular area of the book (for example problems 75 - 85) try the following technique instead:

"¢ Begin with a problem from 1 to 10 - say problem number 3. Then follow that same unit's digit throughout the book all the way back, so do problems 3, 13, 23, 33, 43, 53, etc. all the way to the end of the section or until you have completed a certain number of problems.

"¢ This will give you a wider variety of question difficulty during each practice session. It also makes your practice sessions comparable. If you are doing problems from all levels of difficulty each time then you will be able to track your improvement.

"¢ This does not work with reading comprehension! There you will need to pick two or three passages to do. Try to make these passages from different difficulty levels as well as a mixture of the three main categories (natural science, social science, and business).

"¢ You should also consider mixing up the questions as you practice - instead of doing say, 10 critical reasoning followed by 10 sentence correction, do 2 CR, 2 SC, 2 CR, 2 SC and then a RC passage. This is more realistic practice because you cannot settle in to one question type during the test.