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2.If x and y are positive integers, m and n are integers, where m>n, is x^m/y^n>1 (1)x>y (2)x^m>y^m From(1): if x=2, y=1, m=2, n=1, x^m/y^n = 4>1 if x=2, y=1, m=-1 n=-2, x^m/y^n = 1/2<1 Not Sufficient From(2): x^m>y^m As y>0, and m>n y^m >= y^n So, x^m > y^n As y is positive, y^n is always positive...
- by Frankenstein
Thu Aug 25, 2011 8:14 pm- Forum: Data Sufficiency
- Topic: 4 Inequality DS Questions
- Replies: 11
- Views: 1947
From(1):1. If x,y,m and n are positive integers, where m>n, is x^m/y^n>1?
(1)x>y
(2)x^m>y^m
x>y
So, x^m > y^m
m>n. So, y^m >= y^n
So, x^m > y^n
Sufficient
From(2):
x^m > y^m
As m>n, y^m >= y^n.
So, x^m > y^n
Sufficient
Hence, D
- by Frankenstein
Thu Aug 25, 2011 8:01 pm- Forum: Data Sufficiency
- Topic: 4 Inequality DS Questions
- Replies: 11
- Views: 1947
Actual Question is : 3.If x and y are non zero integers and m and n are positive integers, where m>n is x^m/y^n>1? (1)x>y (2) x^m>y^m Ans is C! By using the statement 1, we can conclude statement 2, X^m > y^m ...that's sufficient to ans. Hi, The question has been changed one day after HeintzC2 post...
- by Frankenstein
Thu Aug 25, 2011 7:56 pm- Forum: Data Sufficiency
- Topic: 4 Inequality DS Questions
- Replies: 11
- Views: 1947
@ Frankeistein: There is a difference between that post and this version. Read my last comments in the original post -(I have seen different version of the problem in BTG posts. But those are with the modifier "THAT". So please do not refer to those posts) I have verified in Kaplan 800 an...
- by Frankenstein
Thu Aug 25, 2011 7:04 am- Forum: Sentence Correction
- Topic: Kaplan 800
- Replies: 12
- Views: 1804
Hey guys,
I guess we don't need to worry about this question. Refer to Ron's post at:
http://www.beatthegmat.com/reality-tele ... 54890.html
- by Frankenstein
Thu Aug 25, 2011 6:54 am- Forum: Sentence Correction
- Topic: Kaplan 800
- Replies: 12
- Views: 1804
u can find the subject in a sentence by hiding the portion coming after preposition for ...... over here in the sentence if u see market for reality tv shows then u can hide portion in red.......... Hi, I guess everyone is clear that the subject is booming market. That's is the reason every one cho...
- by Frankenstein
Thu Aug 25, 2011 6:42 am- Forum: Sentence Correction
- Topic: Kaplan 800
- Replies: 12
- Views: 1804
Hi, Let x = a-b. So, the question becomes: Is 1/x < -x ? (1)x<0 (2)1<|x| From(1): x is negative. So, -1/x is positive. negative quantity is always less than positive. Sufficient From(2): |x|>1 => x<-1 or x>1. If x is negative, 1/x < -x If x is positive, 1/x > -x Not sufficient Hence, A
- by Frankenstein
Thu Aug 25, 2011 5:55 am- Forum: Data Sufficiency
- Topic: DS
- Replies: 2
- Views: 963
Hi,
I had trouble solving this question. I couldn't think of such assumption. Anyway, I don't want to answer this as I already know the explanation for this. Let others have a go at this.
- by Frankenstein
Wed Aug 24, 2011 11:42 pm- Forum: Critical Reasoning
- Topic: knewton CR
- Replies: 8
- Views: 1764
Hi, I thought 1920 better than 1920s, however, since you mentioned that you have seen similar usage in GMATPrep - could you pls share some more insight into such usage. How 1920 and 1920s are different/same and how B and C changes the meaning. Hi, Original sentence says since the 1920s, which is a ...
- by Frankenstein
Wed Aug 24, 2011 11:38 pm- Forum: Sentence Correction
- Topic: since the 1920s or since 1920
- Replies: 7
- Views: 1971
Source : masterGmat Free Sim Test Okay...Any idea what the OA is? I am sending PM to Master GMAT expert anyway. No need . The OA is C . The Explanation is that B changes the original meaning I am not worried about the underlined part. Of course, B changes the meaning. I have posted him regarding th...
- by Frankenstein
Wed Aug 24, 2011 10:57 pm- Forum: Sentence Correction
- Topic: since the 1920s or since 1920
- Replies: 7
- Views: 1971
Okay...Any idea what the OA is? I am sending PM to Master GMAT expert anyway.mundasingh123 wrote:Source : masterGmat Free Sim Test
- by Frankenstein
Wed Aug 24, 2011 10:32 pm- Forum: Sentence Correction
- Topic: since the 1920s or since 1920
- Replies: 7
- Views: 1971
Hi, This usage is perfectly fine. There is not ambiguity as it is stated his discovery of polygraphic method... It is as good as Columbus' discovery of America and not just Columbus' discovery, which could be a bit ambiguous. but X 's discovery means the same as "discovery of X" That is w...
- by Frankenstein
Wed Aug 24, 2011 10:23 pm- Forum: Sentence Correction
- Topic: is "His Discovery " correct it seems as if he was
- Replies: 10
- Views: 1698
Hi, since the 1920s and since 1920 are both valid. I have seen similar usage in a GMAT Prep SC question. So, that is enough to say it is accepted by GMAC. However, I have other doubts in this question. Is this from an authentic source or pasted from an article? I have googled this and found the foll...
- by Frankenstein
Wed Aug 24, 2011 8:11 pm- Forum: Sentence Correction
- Topic: since the 1920s or since 1920
- Replies: 7
- Views: 1971
Hi,
This usage is perfectly fine. There is not ambiguity as it is stated his discovery of polygraphic method...
It is as good as Columbus' discovery of America and not just Columbus' discovery, which could be a bit ambiguous.
- by Frankenstein
Wed Aug 24, 2011 7:16 pm- Forum: Sentence Correction
- Topic: is "His Discovery " correct it seems as if he was
- Replies: 10
- Views: 1698
if there are 7 women and 7 womenin total at the dance, Hi, I guess it is 7 men and 7 women. Coming to the problem, You calculation contains all pairs in which neither Sam nor Jessica is chosen. But, the question asks all pairs except the pair of Sam and Jessica. There is a difference, right? For in...
- by Frankenstein
Wed Aug 24, 2011 7:06 pm- Forum: Problem Solving
- Topic: probability doubt
- Replies: 3
- Views: 1610