Thanks for your post! You are indeed right - we had made an error in the question. We have fixed the coefficient in statement (2) to ensure that the result is insufficient, and have verified the result with a little bit of legwork. We are always trying to improve our materials, and we really appreci...

It is in fact the case that 'which', which generally introduces a non-essential modifier (as in this sentence), is correctly introduced by a comma. For example, in the Verbal Official Guide (the purple guide) Sentence Correction #73, the correct answer reads: Analysts blamed May's sluggish retail sa...

Greg, From the sound of things, you are working hard. And it's very good that you are focussed on your understanding (i.e. the results of your studies) in addition to how much you're doing (i.e. the process). They are both very important. The first step is, do you understand the principles that are ...

John, That's a great question, as many people are motivated to buy used copies of books to save money. The main drawback to buying used copies (and it's a big one) is that the code used to access online resources has been used in almost every case. In other words, you won't be able to access the que...

Alok, It has been the case that students have scored similarly to you on the MGMAT CAT and had strong, but not stellar results on the actual GMAT. We’ve been monitoring the scoring closely. So far, our data is showing that the highest score a student gets on one of our practice tests overshoots the ...

Alok, Your high accuracy in Sentence Correction is very promising. And it sounds like you're on the border of a strong performance. The crux of the problem in your other tests is, in my opinion, running out of time and having to guess on the last 7 verbal questions. That will be enough to severely h...

Alok, I also posted under MGMAT practice tests, but just wanted to make sure that you saw the response. :) Your high accuracy in Sentence Correction is very promising. And it sounds like you're on the border of a strong performance. The crux of the problem in your other tests is, in my opinion, runn...

Alok, As it seems that you have ample time before 1st round applications, I would agree that you should wait until your comfort level and confidence are high, and that would include doing well on a GMAT Prep test. It's important that you're feeling confident, prepared, and well-rested going in. Keep...

It's definitely very difficult to maintain a good pace on the Quant section, as most people struggle to complete the section within 75 minutes. It's harder also during a practice test. I would advise breaking it down by conducting timed drills of blocks of questions. For example, force yourself to c...

Scott, The guide is correct as written. However, it is confusing how one step leads to the enxt. The original statement reads a + b/b = 21 Looking at the left hand side of the equation, the denominator b actually applies to both a + b in the numerator: a/b + b/b = 21 (Mathematically, if you had (1+2...

Yes Kate, you'll be happy to know that the answer to that question is indeed (A). Nice job!

Let us know if there's anything else that we can provide. Best, - Andrew

Guynoor, I am borrowing info from a response that was posted under MGMAT Practice Tests. We’ve been monitoring the scoring closely. So far, our data is showing that the highest score a student gets on one of our practice tests overshoots the score on the real GMAT by about 10-15 points. We haven’t y...

This is a tricky problem, and requires one to understand each of the givens. s and t are each positive integers - that is, they are whole numbers. s/t = 64.12. That is, s divided by t results in a remainder of .12t left over. The question then asks which could be the remainder of s/t. That is, which...

Preet, From what has been released by GMAC, their algorithm functions such that one can get a substantial proportion of questions wrong and still wind up with a very high score. At higher levels, this means that one is also getting a substantial proportion of difficult questions correct as well. Our...

Rajesh, I'm assuming that R is an integer. Generally, my understanding would be that a = b in every case except 0 or 1 (where either raised to any power would be equal to 0 or 1) or -1 (where a and b can be different and the result is still 1 or -1). For all other integers as R, a would equal b. I h...