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# Kap Diagnostic If b<1 and 2x-b=0 which of the following

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Manager
Joined: 31 Jul 2006
Posts: 226
Kap Diagnostic If b<1 and 2x-b=0 which of the following [#permalink]

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23 Aug 2008, 19:55
This topic is locked. If you want to discuss this question please re-post it in the respective forum.

Kap Diagnostic
If b<1 and 2x-b=0 which of the following must be true?
x>-1
x<-2
x=2
x<3
x>3
Manager
Joined: 11 Apr 2008
Posts: 198
Re: Data SUff Kap DIagnostic [#permalink]

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23 Aug 2008, 22:25
2x-b=0
2x=b
x=b/2 and b<1 which indicates b can be fraction, 0 or negative value

so for any value of x that is less than -2 the equation 2x-b=0 can be satisfied keeping the value of b<1

Am i right?
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SVP
Joined: 29 Aug 2007
Posts: 2453
Re: Data SUff Kap DIagnostic [#permalink]

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23 Aug 2008, 22:34
Kap Diagnostic

If b<1 and 2x-b=0 which of the following must be true?

x>-1
x<-2
x=2
x<3
x>3

D. x < 3.

I do not like this question.
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Manager
Joined: 20 May 2008
Posts: 55
Re: Data SUff Kap DIagnostic [#permalink]

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24 Aug 2008, 00:06
I hate this question. I remember I got something similar to this in the real GMAT and I messed up Unfortunately it was the 1st question and my nerves got the better of me then

BTW ... The ans to on should be D.

x=b/2
since b < 1, x could be any value less than 1/2

so x<1/2

D. X<3 satisfies this condition.
Intern
Joined: 16 Feb 2006
Posts: 30
Location: ZURICH
Re: Data SUff Kap DIagnostic [#permalink]

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24 Aug 2008, 03:59
If b<1 and 2x-b=0 which of the following must be true?
x>-1
x<-2
x=2
x<3
x>3

2x-b = 0
or, b = 2x

but as per the above condition b < 1 this means 2x < 1
which implies that x < 1/2
only option x < -2 will be best suited for the above question

Please verify and let me know in case of any queries
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Senior Manager
Joined: 06 Apr 2008
Posts: 401
Re: Data SUff Kap DIagnostic [#permalink]

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24 Aug 2008, 04:12
Kap Diagnostic
If b<1 and 2x-b=0 which of the following must be true?
x>-1
x<-2
x=2
x<3
x>3

IMO B)

x<3 cannot be true because x=2 means b=4 which is wrong
Director
Joined: 12 Jul 2008
Posts: 513
Schools: Wharton
Re: Data SUff Kap DIagnostic [#permalink]

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24 Aug 2008, 09:21
Kap Diagnostic
If b<1 and 2x-b=0 which of the following must be true?
x>-1
x<-2
x=2
x<3
x>3

B

2x = b
2x < 1

The only option that fulfills this is x < -2
Manager
Joined: 14 Jun 2007
Posts: 158
Location: Vienna, Austria
Re: Data SUff Kap DIagnostic [#permalink]

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25 Aug 2008, 01:13
friends, is the OA b or d ?
GMAT Instructor
Joined: 04 Jul 2006
Posts: 1254
Re: Data SUff Kap DIagnostic [#permalink]

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25 Aug 2008, 01:22
Everybody agrees that x must be less than 1/2. Thus x must be less than 3. This does not imply however, that x could be between 1/2 and 3. Are we are saying in choosing D is that we know for sure that x is less than 3.
Re: Data SUff Kap DIagnostic   [#permalink] 25 Aug 2008, 01:22
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# Kap Diagnostic If b<1 and 2x-b=0 which of the following

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