Find all School-related info fast with the new School-Specific MBA Forum

It is currently 23 Jul 2014, 10:53

Close

GMAT Club Daily Prep

Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track
Your Progress

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

IF it is true that x > -2 and x < 7, which of the

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
Director
Director
avatar
Joined: 15 Aug 2005
Posts: 804
Location: Singapore
Followers: 2

Kudos [?]: 3 [0], given: 0

GMAT Tests User
IF it is true that x > -2 and x < 7, which of the [#permalink] New post 03 Sep 2005, 05:05
00:00
A
B
C
D
E

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 0 sessions
IF it is true that x > -2 and x < 7, which of the following must be true?

A. x > 2
B. x > -7
C. x < 2
D. -7 < x < 2
E. None of the above

Pls explain your answer. Thanks!

_________________

Cheers, Rahul.

Manager
Manager
avatar
Joined: 06 Aug 2005
Posts: 198
Followers: 3

Kudos [?]: 5 [0], given: 0

GMAT Tests User
 [#permalink] New post 03 Sep 2005, 12:41
No it is B.

x>-7

The range is -2 < x < 7

A and C split that range so it can't be right.
D has numbers other way round.
Intern
Intern
avatar
Joined: 16 Aug 2005
Posts: 25
Location: India
Followers: 0

Kudos [?]: 0 [0], given: 0

 [#permalink] New post 03 Sep 2005, 15:02
E.

the values of x will be: -2<x<7

(-6 is greater than -7 but x can't be -6, so D is wrong)
SVP
SVP
User avatar
Joined: 05 Apr 2005
Posts: 1736
Followers: 3

Kudos [?]: 29 [0], given: 0

GMAT Tests User
Re: PS Inequalities [#permalink] New post 03 Sep 2005, 20:10
rahulraao wrote:
IF it is true that x > -2 and x < 7, which of the following must be true?
A. x > 2
B. x > -7
C. x < 2
D. -7 < x < 2
E. None of the above


:roll: hmmm.... i thought i have answered it. Anyway, B is correct.
Intern
Intern
avatar
Joined: 16 Aug 2005
Posts: 25
Location: India
Followers: 0

Kudos [?]: 0 [0], given: 0

 [#permalink] New post 05 Sep 2005, 11:41
B says x>-7, even 10 is greater than -7, but 10 cannot be the value ox x
Intern
Intern
avatar
Joined: 02 Sep 2005
Posts: 17
Followers: 0

Kudos [?]: 1 [0], given: 0

 [#permalink] New post 05 Sep 2005, 18:11
E should be the right answer.

Since x> -2 and x<7, x can be any number between these two values but x cannot be more than 7 or less than -2.

a) x>2 includes values that are more than 7, so it is not correct
b) x> -7 incudes values that are less than -2, so it is not correct
c) x< 2 includes values that can be less -2, so it is not always correct
d)x > -7 is inconsistent with the statement that x> -2
e) using poe E is the correct answer
Intern
Intern
User avatar
Joined: 05 Sep 2005
Posts: 11
Followers: 0

Kudos [?]: 0 [0], given: 0

 [#permalink] New post 06 Sep 2005, 09:19
B is absolutely right. Rests are wrong.
It says "IF it is true that x > -2 and x < 7". In other words, -2<x<7.
THEREFORE, x logically is GREATER than -7, for all x.

D is wrong with x=5, for instance.


Hope this help.

tibeo - vietnam

_________________

I can, therefore I am

SVP
SVP
User avatar
Joined: 03 Jan 2005
Posts: 2255
Followers: 12

Kudos [?]: 187 [0], given: 0

GMAT Tests User
 [#permalink] New post 07 Sep 2005, 11:59
acid_burn wrote:
E should be the right answer.

Since x> -2 and x<7, x can be any number between these two values but x cannot be more than 7 or less than -2.

a) x>2 includes values that are more than 7, so it is not correct
b) x> -7 incudes values that are less than -2, so it is not correct
c) x< 2 includes values that can be less -2, so it is not always correct
d)x > -7 is inconsistent with the statement that x> -2
e) using poe E is the correct answer


This is a classical question and classical mistake in answering this kind of questions.

When it says x<7 then it MUST be true that x is less than 8, or 9, etc. But x>-2, so it must be true that it is greater than -3, -4 etc. X may or may not be less than 6 if all we know is that it is less then 7. It may or may not be less than -1 if all we know is that it is greater than -2.

If the question is asked differently, then answer would be different. For example if the question is like this:
Which of the following statement will ensure x is less than 7 and greater than -2?
Then you would need to look at it from another perspective. If x is less than 7, 6 or 5 etc., then we would be able to ensure x is less than 7. If x is greater than -2, -1 or 0 etc., then we would be able to ensure x is less than -2.

Basically all we are deriving at is if one (A) is true, then the other (B) is always true. But we just need to know which one is A and which one is B.

_________________

Keep on asking, and it will be given you;
keep on seeking, and you will find;
keep on knocking, and it will be opened to you.

Director
Director
avatar
Joined: 15 Aug 2005
Posts: 804
Location: Singapore
Followers: 2

Kudos [?]: 3 [0], given: 0

GMAT Tests User
 [#permalink] New post 08 Sep 2005, 16:18
Guys,

Nice explanations! I really liked HongHu's logic! Thanks man!

OA is B
OA reasoning is almost in line with HongHu's logic, but rather unclear!

_________________

Cheers, Rahul.

  [#permalink] 08 Sep 2005, 16:18
    Similar topics Author Replies Last post
Similar
Topics:
Experts publish their posts in the topic If it is true that x > -2 and x <7, which of the following m eybrj2 6 14 Mar 2012, 14:24
1 Experts publish their posts in the topic If 4<(7-x)/3, which of the following must be true? mobsyland 5 23 Oct 2010, 07:49
14 Experts publish their posts in the topic If 4<(7-x)/3, which of the following must be true? mn2010 15 12 Aug 2010, 14:05
x/|x| < x. Which must be true? x > 1 x> -1 |x| < bmwhype2 5 17 Dec 2007, 08:15
If it is true that x > -2 and x < 7, which of the sudhagar 13 06 Nov 2005, 11:41
Display posts from previous: Sort by

IF it is true that x > -2 and x < 7, which of the

  Question banks Downloads My Bookmarks Reviews Important topics  


GMAT Club MBA Forum Home| About| Privacy Policy| Terms and Conditions| GMAT Club Rules| Contact| Sitemap

Powered by phpBB © phpBB Group and phpBB SEO

Kindly note that the GMAT® test is a registered trademark of the Graduate Management Admission Council®, and this site has neither been reviewed nor endorsed by GMAC®.