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Take a Manhattan GMAT course (either online or in-person if you are in NY/DC/Boston). Also, it would probably help to take a math course if your feel that the reason you are scoring poorly is lack of ability in math. The trick to the GMAT is learning the fundamentals. For instance, a reverse work pr...
- by rosenjon
Thu Jun 05, 2008 8:23 am- Forum: I just Beat The GMAT!
- Topic: Beat up, Bruised and Sold on the Black Market
- Replies: 17
- Views: 6228
First let's take a look at the stem. While it defines some variables, it doesn't really help you out much. We want to know the remainder when an unknown number is divided by 7. So basically, we are starting from scratch here, with the exception that we know that r<=6 Statement 1 doesn't help much. I...
- by rosenjon
Tue May 13, 2008 4:55 pm- Forum: Data Sufficiency
- Topic: GMAT Prep ?? Another divisibility Pract 2
- Replies: 1
- Views: 1375
Any number can be broken down into powers of primes. The only even prime is 2. All primes of this number are greater than 7. Therefore, this number has all odd prime factors. Since odd * odd = odd, this number must therefore be odd. If this number is odd, we can determine that when plugged into the ...
- by rosenjon
Tue May 06, 2008 12:24 am- Forum: Data Sufficiency
- Topic: GMAT prep prime factor
- Replies: 9
- Views: 4538
What others have said is correct. However, I prefer to look at it in the opposite way from how others derived the answer. Instead of multiplying by 50 with the statement, do the opposite for the stem. 100(R) +50 (S) = Total Price 50(2R+S) = Total Price You will notice that statement 2 gives you 2R+S...
- by rosenjon
Sun Apr 27, 2008 8:45 pm- Forum: Data Sufficiency
- Topic: Help with understanding a problem
- Replies: 4
- Views: 1605
FYI for the community - when you completely factor a fraction into its primes, and cancel, any fraction with only powers of 2 and 5 in its denominator will terminate. Otherwise, it will be a repeating decimal.
- by rosenjon
Sun Apr 06, 2008 7:17 pm- Forum: Data Sufficiency
- Topic: help needed!!!!
- Replies: 3
- Views: 1723