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DS- x>3

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Source: — Data Sufficiency |
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by liferocks » Wed May 19, 2010 8:48 pm
From 1

(x-1)>2 or (x-1)<-2
or x>3 or x<-1...not sufficient

From 2
(x-2)>3 or (x-2)<-3

or x>5 or x<-1..not sufficient

combining
x<-1.or x>5..not sufficient

Ans option E
Last edited by liferocks on Wed May 19, 2010 9:50 pm, edited 1 time in total.
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by krazy800 » Wed May 19, 2010 8:54 pm
liferocks wrote:From 1

(x-1)>2 or (x-1)<-2
or x>3 or x<-1...not sufficient

From 2
(x-2)>3 or (x-2)<-3

or x>5 or x<-1..not sufficient

combining
x<-1...sufficient

Ans option C
IMO E

combining statements I and II

x<-1 or x>5

so E

plz correct me if am wrong
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by liferocks » Wed May 19, 2010 9:50 pm
krazy800 wrote:
liferocks wrote:From 1

(x-1)>2 or (x-1)<-2
or x>3 or x<-1...not sufficient

From 2
(x-2)>3 or (x-2)<-3

or x>5 or x<-1..not sufficient

combining
x<-1...sufficient

Ans option C
IMO E

combining statements I and II

x<-1 or x>5

so E

plz correct me if am wrong
hmm..agree with E.I have edited the post.Thanks for pointing out.
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by Rafter » Thu May 20, 2010 1:20 pm
It should be D . OA please.
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by Patrick_GMATFix » Fri May 21, 2010 10:26 am
Statement (1): (x-1)^2 > 4.
for the square of the left side to be more than 4, what's inside the parentheses must be greater than 2 (meaning x must be greater than 3) or what's inside the parentheses must be less than -2 (meaning x is smaller than -1). Because x is positive, the 2nd possibility is invalid and x must be greater than 3. (1) is sufficient.

Statement (2) can be solved in a very similar way and also found sufficient.

Answer is D. This is QID 1475

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by kel2010 » Fri May 21, 2010 1:52 pm
ans should be D.

for statement I all values above 3 give desired result
for statement II all vales above 5 give desired result.
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by nicajvch » Tue May 25, 2010 11:26 am
Why wouldnt it be the same for number less than -3?
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by T11 » Wed May 26, 2010 9:02 am
The Q says x is positive.

So, (x-1) cannot <= -2
ans similarly (x-2) cannot <= -3

Hence Both I & II are sufficient.
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by sumanr84 » Wed May 26, 2010 10:40 am
tricky !!

People always miss small details like this one " x>0 " ( I too missed :()
I am on a break !!
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