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

It is currently 22 Jul 2014, 06:40

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

Is x between 0 & 1? 1. x^2 is less than x 2. x^3 is

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
Senior Manager
Senior Manager
avatar
Joined: 02 Feb 2004
Posts: 345
Followers: 1

Kudos [?]: 8 [0], given: 0

GMAT Tests User
Is x between 0 & 1? 1. x^2 is less than x 2. x^3 is [#permalink] New post 25 May 2004, 05:19
00:00
A
B
C
D
E

Difficulty:

  5% (low)

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 0 sessions
Is x between 0 & 1?
1. x^2 is less than x
2. x^3 is positive
SVP
SVP
User avatar
Joined: 30 Oct 2003
Posts: 1798
Location: NewJersey USA
Followers: 3

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

GMAT Tests User
 [#permalink] New post 25 May 2004, 06:29
A) is sufficient
x^2 is always +ve and since it is less than x X has to be +ve and always lies between 0 and 1

B) Just tells us that x is +ve(Insufficient)
Director
Director
User avatar
Joined: 05 May 2004
Posts: 577
Location: San Jose, CA
Followers: 2

Kudos [?]: 24 [0], given: 0

GMAT Tests User
Re: DS: Exponent [#permalink] New post 25 May 2004, 15:05
mirhaque wrote:
Is x between 0 & 1?
1. x^2 is less than x
2. x^3 is positive


A
x^2-x<0; x(1-x)>0
hence, either x>0 AND x<1; or x<0 AND x>1
The latter makes no sense so x>0 AND x<1 has to be true!
Intern
Intern
avatar
Joined: 27 May 2004
Posts: 9
Location: France
Followers: 0

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

 [#permalink] New post 27 May 2004, 14:08
(1) Tell us that either -1<x<0 or 0<x<1.

(2) Tell us that x>0

== > so to me both statements are mandatory and we get 0<x<1

Answer (C)
Intern
Intern
avatar
Joined: 06 May 2004
Posts: 17
Location: Queens, NY
Followers: 0

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

 [#permalink] New post 27 May 2004, 19:21
Bundo wrote:
(1) Tell us that either -1<x<0 or 0<x<1.

(2) Tell us that x>0

== > so to me both statements are mandatory and we get 0<x<1

Answer (C)


(1) x^2 < x

let x= 1/2 , (1/2)^2 < 1/2
let x = - 1/2 , ( -1/2) ^2 = 1/4. Thus 1/4> - 1/2, which means in order for x^2 < x, x has to be +ve. (1) is sufficient.

(2) simply says x is +ve. X can be 2, 3, 4, or 1/2 or 1/3 0r 1/5 . Squaring any of these numbers can be both greater or less than than original x.

Thus, (1) is sufficient

which means
Intern
Intern
avatar
Joined: 27 May 2004
Posts: 9
Location: France
Followers: 0

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

 [#permalink] New post 28 May 2004, 00:43
You re rigth, I have completely overlooked the fact that -1/2 < 1/4 :x
  [#permalink] 28 May 2004, 00:43
    Similar topics Author Replies Last post
Similar
Topics:
1 Experts publish their posts in the topic Is x between 0 and 1? (1) - x < x^3 (2) x < x^2 rxs0005 10 05 Jan 2011, 10:23
2 Experts publish their posts in the topic Is X between 0 and 1 ? (1) x^2 is less than x (2) x^3 is jscott319 16 04 Nov 2010, 18:49
Is X between 0 & 1? 1) X^2 is less than X 2) X^3 is MontrealLady 2 04 Mar 2010, 17:53
Is x between 0 and 1? (1) x^2 is less than x. (2) x^3 is johnbaker 3 27 Oct 2007, 12:57
Is x between 0 and 1? (1) x 2 is less than x. (2) x3 is crazy123 1 11 Aug 2007, 21:09
Display posts from previous: Sort by

Is x between 0 & 1? 1. x^2 is less than x 2. x^3 is

  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®.