B-school reapplicants will tell you that the schools keep scores on file for 5 years (that is, when you re-apply, they say don't worry about sending scores again unless they've changed). Take the offer and send them since you'll do well ;) and you can save $28 a pop later since you'll be applying fo...

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 ...

I think the answer is D as well. r = v because they are interior angles created when two parallel lines are cut by another line. pepeprepa is right about that, it is a standard geometry rule you'll need on exam day. Therefore, for r = y, then y = v. If the whole thing is a square y = v when they are...

The best way to handle a problem like this, I think, is to do a quick example to understand the function F. F(8) = 4 {7,5,3,1}. Therefore, pick any prime, say 11. F(11) = 10 {10, 9,8,7,6,5,4,3,2,1} which makes sense because the prime number, by definition, doesn't share any positive common factors w...

I'm not entirely sure how sudhir3127 got the 14, but that is what I get as well by doing the following procedure: If I'm going to take 30! and divide by a bunch of 3's, I would like to divide by all of the 3 factors in 30! to find the largest value for x. I can figure this out by looking at all of t...

Here's my unsolicited help on number 2 since I think it is such a classic GMAT problem. Since no one asked for help, feel free to tell me to shut up :). 4^17 - 2^28 = (2^2)^17 - 2^28 = 2^34 - 2^28 from here, factor out a 2^28 leaving you with: 2^28 * (2^6 - 1) Since we know the 2^28 portion just rea...

I would recommend stopping by Barnes and Noble and picking up a GMAT math book. It'll will have material on these topics. You can buy a math text book, but I suspect they'll go too deep into these subjects. A GMAT book will really just give you what you need to succeed on test day. Plus, you can alw...