GMATT73
Outstanding job Gamjatang! Your Math and Verbal scores both ROCK! Consider yourself a contender at any school that you apply at. Good luck with your applications!
btw: What was your impression of the math? what kind of problems did you encounter? easier or harder than the OG?
Matt

Sorry about my long suspense. I was very busy doing two projects at work.
My impression of the math was somewhat 'strange'. Since middle school, math was my weakest part. After graduating from high school, I stopped studying math because none of my university curriculum was related to math. I was completely away from math for about 10 years.
Therefore, I had a big big concern about math in GMAT. "What should I do..what should I do..I'm really bad at math...what should I do..."
I went through OG math 2 times. The first time I finished OG math, I was so disappointed that I thought to myself "Should I give up going to MBA...?" My hit rate was below 60%! Luckily, I did not give it up and started to get accustomed to as many types of math questions as possible. Actually, I 'memorized' as many types of math questions as I could. I admit that I lack the brain which can think mathwise, so why don't I just memorize them all? (This was the same strategy I chose when taking the university entrance exam.) There are tons of different questions available in the two internet sites I posted up there (GMAT Club and oneshotmath), and I used these two sites as my main math sources.
I had so much fear against math, and was very nervous when I took the first GMAT test. While taking 5 minute break after finishing math part, I thought "Well...all those math questions were so easy. It should have been that I wasn't answering them right." (You know, when you answer the questions wrong, your next questions are easier than previous ones.) But I got 50 in math. I couldn't believe it myself...I guess my strategy worked this time, too.
In sum, math questions were easier than OG. No complicated calculation such as speed, dimension, etc), but many DS questions.
I am totally sure that you can do better than I did. Go for 51, Matt!