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kevinspain

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kevinspain last won the day on September 23 2007

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  1. It's hard to say for sure, but I noticed that the verbal scores reported in August and September were very high. It could be that there was a self-reporting bias (high scorers may be more likely to post their scores than are low scorers) or that the people who chose to take the exam soon after the change were strong candidates. However, it is also possible that the verbal section is not as difficult as ETS had envisioned- it would be nice to see how the final scores compare to the estimated scores.
  2. That's a really good point about the AWA! I got a 170Q 170V but only a 3.0 on the AWA, perhaps because I assumed that I simply had to analyze the argument given and take a stand on the issue, supporting it with examples. I have never done very well on the AWA (I usually get 5 when I take the GMAT), but a 3 is really bad. I suspect I may have overlooked specific prompts.
  3. Note that a*b = (a^2 - b^2)/ab =(a+b)(a-b)/ab, which, when a and b are both positive, has the same sign as a - b Given that m>n>0 1/m 0 How did Econ get mn/(m^2 - n^2)? He used the definition and simplified: 1/m * 1/n = (1/m)/(1/n) - (1/n)/(1/m) = n/m - m/n Remember, to add or subtract fractions, you must get a common denominator - in this case mn n/m - m/n = (n^2 - m^2)/mn It seems that here lies his mistake
  4. Tough or easy is relative, but I much prefer the new format: no arcane vocabulary, more a test of interpretation. Make good use of the ETS materials to begin with. I scored 170 in quant as well
  5. I noticed that the estimate ranges were, on average, pretty high, although the scores reported may have been biased. Is 157 V enough for your needs?
  6. I didn't write a lot for the issue essay, but I was proud of the Argument essay I wrote. I'm a GMAT instructor, and I took the GRE to see how it stacks up to the GMAT. I always get a 5.0 on the GMAT AWA. I never put forth my best effort and am a slow typer, but a 3.0 is really really low, I'll admit. I'll try it again soon.
  7. It's pretty close: I got a 170 V 170 Q but only a 3.0 in the AWA (11th percentile). I'm attaching this concordance table. I'm a GMAT instructor, and I wanted to see how the GRE compares http://www.ets.org/s/gre/pdf/gre_guide.pdf Kevin Armstrong Madrid, Spain
  8. Send me a private message and I will share some great materials with you! We 40-year-olds have to help one another! Kevin Armstrong GMAT Instructor Madrid, Spain
  9. 790 is a very high score indeed. Don't underestimate your achievement, and be sure to work hard on your applications.
  10. If you think that the c simply translates the parabola vertically, it is clear that we can answer the question if and only if we know the value of a A If one had to find the actual value of x without using calculus, one could complete the square.
  11. Also, we are looking for perfect squares whose difference is 68. They cannot be squares of consecutive integers (they would be odd and even or vice versa), so consider (k+2)^2 and k^2. The dfference is 2(2k+2), so k=16 and n= 16^2 -100 = 156
  12. The two circles can be inscribed in a rectangle that is 3 cm by 2 cm. The area inside the rectangle at the four corners but outside the two circles is 4 - pi . Regarding the two lips outside the two circles at top and bottom center of the rectangle, the area is mimimal I'd say 6 = pi + pi + 4 - pi - x, where x is the desired area, x = pi - 2 This is a bit conservative
  13. That's the second highest score I've seen on GMAT Focus. Did you make only 1 mistake? A 50-51 seems to be within reach!
  14. Note that every entry in the second row must be 6 greater than the entry above it.
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