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Hi
A follow-up question is if n=4*n^2 than the number of divisor will be (2+1)*(2+1)= 9 and we would subtract 3 from 9 because there are 2 odd numbers and 1. So, the answer will be 6 even divisors(factors).
I think you meant N=4*P^2. If that's the case then indeed you are right.
Regards
NR
- by November Rain
Sat Jan 29, 2011 6:07 pm- Forum: GMAT Math
- Topic: Problem solving question
- Replies: 8
- Views: 2017
Hi towerSpider Correct me if I am wrong: you have to do this method only when a number is represented in prime factorized form, e.g. lets take 12: Yes, you're right, altough you should see it the other way around - you need to represent a number in its prime factorized form in order to use this meth...
- by November Rain
Sat Jan 29, 2011 6:04 pm- Forum: GMAT Math
- Topic: Problem solving question
- Replies: 8
- Views: 2017
Hi guys, I would solve it like this: N is the result of the multiplication between 4 and P, where P is prime odd number (with no divisors except 1 and itself). So, trough the number properties N = 2(^2) * P(^1). And here’s a little trick: whenever you need to know how many different divisors a num...
- by November Rain
Sat Jan 29, 2011 8:12 am- Forum: GMAT Math
- Topic: Problem solving question
- Replies: 8
- Views: 2017
First Stage Interview Season is open
Hi guys,
Some universities have started to make interview invitations for next year's MBAs, while others are about to.
If you have already received invitations from schools, please let us know which schools and provide some debriefings of the interviews 
- by November Rain
Mon Oct 18, 2010 7:57 am- Forum: Admissions Success Stories
- Topic: First Stage Interview Season is open
- Replies: 0
- Views: 2183
Should I convert my undergrad average?
Hi all, I have one question concerning my undergrad average. I finished my B.A. in Economics in a Portuguese university, and in Portugal the scale we use to calculate the undergrad averages is different from the one used in the US and Britain (i.e. the GPA). Rather than a scale that goes from 0 to 4...
- by November Rain
Sat Aug 07, 2010 11:35 am- Forum: Admissions Success Stories
- Topic: Should I convert my undergrad average?
- Replies: 0
- Views: 2734
Thanks all! :) @ shalzz9 Well, I found that the CR questions were in line with the GMATprep material - a little harder than the questions of my first practice test, and a little easier than those of my second practice test, but definitely not longer. What I found about CR and RC questions however, i...
- by November Rain
Sat Jun 19, 2010 8:52 am- Forum: I just Beat The GMAT!
- Topic: I just Beat the GMAT: 720 (Q49, V38) - Don't ever give up!
- Replies: 8
- Views: 6710
I just Beat the GMAT: 720 (Q49, V38) - Don't ever give up!
Hi all, Well, I guess today is my turn to say I Beat the GMAT! After a long, tiring and very stressful day I looked at my score and could hardly believe it: 720 Q49 V38 (94th percentile). Since this is going to be a long post, there are three things that I want to say in first place, just in case yo...
- by November Rain
Thu Jun 17, 2010 5:40 pm- Forum: I just Beat The GMAT!
- Topic: I just Beat the GMAT: 720 (Q49, V38) - Don't ever give up!
- Replies: 8
- Views: 6710
IMO A If |p| = q - r it means that either p = q - r or (-p) = q - r Statement 1 tell us that p + q = r -> p = r - q -> - p = q - r Sufficient. Statment B does not tell us anything. Insufficient (1) is not sufficient because what if r-q is negative? It couldn't possibly be equal lpl. (1) does not te...
- by November Rain
Tue May 18, 2010 10:36 am- Forum: Data Sufficiency
- Topic: Is |p| =
- Replies: 8
- Views: 1922
IMO A
If |p| = q - r it means that either p = q - r or (-p) = q - r
Statement 1 tell us that p + q = r -> p = r - q -> - p = q - r
Sufficient.
Statment B does not tell us anything. Insufficient
- by November Rain
Tue May 18, 2010 9:40 am- Forum: Data Sufficiency
- Topic: Is |p| =
- Replies: 8
- Views: 1922
Hi, I think its A Statement 1 says that (n^2 + N) = N(N+1) is not divisible by 3. However, the rule says that the product of N consecutive integers is divisble by N, or, in this case, the product of 3 consecutive integers is divisble by 3. Since N(N+1) is not divisible by 3, N-1 must be divisble by ...
- by November Rain
Tue May 18, 2010 5:26 am- Forum: Data Sufficiency
- Topic: Divisibility question
- Replies: 2
- Views: 1045
Hi, In my opinion, just because we have "but it also" in the middle of the sentence doesn't mean that we need to have "Not only" in the begining of the sentence (however, the inverse is not true: if we have "Not only" in the begining we need to have "But also"...
- by November Rain
Mon May 17, 2010 7:53 am- Forum: Sentence Correction
- Topic: SC Help
- Replies: 15
- Views: 4210
It says "which of the following could be the least common multiple", not that it must be.
Try X=6 and Y = 4
- by November Rain
Thu May 13, 2010 10:17 am- Forum: Problem Solving
- Topic: least common multiple of two positive integers x and y
- Replies: 5
- Views: 1567
Hi,
One of the properties of the LCM and GCF is that the LCM * GCF = XY
Assuming that the GCF (Greatest Common Factor) is 2, then we would have LCM * 2 = XY, or LCM = XY/2
- by November Rain
Thu May 13, 2010 10:01 am- Forum: Problem Solving
- Topic: least common multiple of two positive integers x and y
- Replies: 5
- Views: 1567
Hi,
I agree that statment 1 is sufficient, but i am not sure about 2.
take X = -3 and Y = -4
This means that |x|>y, but, x^2 - y^2 < 0
- by November Rain
Wed May 12, 2010 10:05 am- Forum: Data Sufficiency
- Topic: 41) MOD DS
- Replies: 7
- Views: 1918
Hi,
Is it B?
The only way the median is equal to the mean is if the set contains evenly spaced numbers.
Since the set contains all even numbers from 2 to 10, but skips the 6, then X = 6
- by November Rain
Wed May 12, 2010 5:45 am- Forum: Data Sufficiency
- Topic: 70) what is the value of x?
- Replies: 5
- Views: 1197