BREAKING: Target Test Prep releases Brand New 2026 On Demand GMAT prep course

Redeem

X=?

This topic has expert replies
Post new topic Post Reply
Previous Topic Next Topic
Source: — Data Sufficiency |
Junior | Next Rank: 30 Posts
Posts: 14
Joined: Fri May 07, 2010 3:54 am
Thanked: 1 times
GMAT Score:690

by GauravMalhotra » Tue May 11, 2010 3:44 am
Answer: both a and b alone are sufficient.
Top
Legendary Member
Posts: 576
Joined: Sat Mar 13, 2010 8:31 pm
Thanked: 97 times
Followed by:1 members

by liferocks » Tue May 11, 2010 4:16 am
is the question complete?..
it looks like something is missing from option 2
"If you don't know where you are going, any road will get you there."
Lewis Carroll
Top
Senior | Next Rank: 100 Posts
Posts: 61
Joined: Mon Nov 09, 2009 3:52 am
Location: India

by jaskaran » Tue May 11, 2010 5:31 am
yea I agree with gaurav, d is the answer. Pls confirm?
Top
User avatar
Legendary Member
Posts: 1022
Joined: Mon Jul 20, 2009 11:49 pm
Location: Gandhinagar
Thanked: 41 times
Followed by:2 members

by shashank.ism » Tue May 11, 2010 6:16 am
pradeepkaushal9518 wrote:does x=3?
1.x2-6x-18=3
2.x2-6x+9
statement 1. x2 - 6x - 18 = 3 --> x2 - 6x- 21 =0 so x=/= 3
statement 2. missing sth in here guys.

so I go for E
My Websites:
www.mba.webmaggu.com - India's social Network for MBA Aspirants

www.deal.webmaggu.com -India's online discount, coupon, free stuff informer.

www.dictionary.webmaggu.com - A compact free online dictionary with images.

Nothing is Impossible, even Impossible says I'm possible.
Top
Senior | Next Rank: 100 Posts
Posts: 41
Joined: Mon Mar 01, 2010 5:57 pm
Location: US
Thanked: 1 times
GMAT Score:640

by 2011mbaspirant » Wed May 12, 2010 2:28 pm
IMO the answer is B. Statement 1 does not satisfy the condition.
Top
Junior | Next Rank: 30 Posts
Posts: 27
Joined: Mon Apr 26, 2010 9:30 pm
Location: Johannesburg, South Africa

by [email protected] » Thu May 13, 2010 2:20 pm
shashank.ism wrote:
pradeepkaushal9518 wrote:does x=3?
1.x2-6x-18=3
2.x2-6x+9
statement 1. x2 - 6x - 18 = 3 --> x2 - 6x- 21 =0 so x=/= 3
statement 2. missing sth in here guys.

so I go for E
:mrgreen:

statement 2:

x2-3x-3x+9=0
x(x-3)-3(x-3)=0
(x-3)(x-3)=0 or sqr(x-3) = 0

ANSWER (B)
Top
Master | Next Rank: 500 Posts
Posts: 140
Joined: Fri Feb 05, 2010 2:43 pm
Thanked: 3 times
GMAT Score:720

by analyst218 » Thu May 13, 2010 3:31 pm
pradeepkaushal9518 wrote:does x=3?
1.x2-6x-18=3
2.x2-6x+9=0
1 and 2 contradict each other..

1 says x=/ 3 and 2 says x=3..
Top
Junior | Next Rank: 30 Posts
Posts: 27
Joined: Mon Apr 26, 2010 9:30 pm
Location: Johannesburg, South Africa

by [email protected] » Thu May 13, 2010 11:30 pm
analyst218 wrote:
pradeepkaushal9518 wrote:does x=3?
1.x2-6x-18=3
2.x2-6x+9=0
1 and 2 contradict each other..

1 says x=/ 3 and 2 says x=3..
:)

how do the statements contradict each other? if one looks at statement 2, the answer is 'yes'.
Top
User avatar
Legendary Member
Posts: 1309
Joined: Wed Mar 17, 2010 11:41 pm
Thanked: 33 times
Followed by:5 members

by pradeepkaushal9518 » Fri May 14, 2010 10:11 am
answer is B as only 2 is sufficient to give answer
Top
User avatar
GMAT Instructor
Posts: 1031
Joined: Thu Jul 03, 2008 1:23 pm
Location: Malibu, CA
Thanked: 716 times
Followed by:255 members
GMAT Score:750

by Brian@VeritasPrep » Fri May 14, 2010 11:26 am
Statements 1 and 2 do contradict each other here.

Statement 1 gives the explicit answer "NO" and Statement 2 gives the explicit answer "YES".

Even just looking at them in the same form, we get:

1) x^2 - 6x = 21

2) x^2 - 6x = -9

Which means that the two statements are contradictory.

The answer as the question is written would be D, since each statement alone gives a definite answer to the overall question. But because those answers are different, this wouldn't be a valid GMAT question - on the exam if you find that your answers conflict, go back to check your work because you likely did something wrong in calculation.
Brian Galvin
GMAT Instructor
Chief Academic Officer
Veritas Prep

Looking for GMAT practice questions? Try out the Veritas Prep Question Bank. Learn More.
Top
Post new topic Post Reply
• Page 1 of 1