Ok my friend and i worked through the math problems from kaplan, and princeton review when we got to the OG, we got stumped. are the offical guifde questions like the ones on the real gmat?
In my experience, the OG questions are similar. By the same token, so are the questions from the test prep books as well. I'd hesitate to get anyone's anecdotal claims that one is harder than another. I would just try to learn as much as possible from them and get ready for test day.
Hopefully that wasn't too snooty...
