Last visit was: 23 Apr 2026, 01:33 It is currently 23 Apr 2026, 01:33
Home
Messages
Tests
Schools
Events
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.
Go to My Error Log Learn more
Close
Request Expert Reply
Confirm Cancel
User avatar
melguy
User avatar
Joined: 22 Mar 2011
Last visit: 25 Feb 2017
Posts: 37
Own Kudos:
54
Given Kudos: 10
Posts: 37
Kudos: 54
Finite Length line 07 Oct 2011, 18:40
Kudos
Add Kudos
Bookmarks
Bookmark this Post
00:00
Start Timer
Pause Timer
Resume Timer
Show Answer
Hide
Show
History
N
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!

Difficulty:

(N/A)

Question Stats:

60% (00:16) correct 40% (01:22) wrong based on 6 sessions

History

Date
Time
Result
Not Attempted Yet
Hello all

I am having a bit of difficulty understanding as to why D is not the answer. Someone plz help

Thanks!



Archived Topic
Hi there,
This topic has been closed and archived due to inactivity or violation of community quality standards. No more replies are possible here.
Where to now? Join ongoing discussions on thousands of quality questions in our Problem Solving (PS) Forum
Still interested in this question? Check out the "Best Topics" block below for a better discussion on this exact question, as well as several more related questions.
Thank you for understanding, and happy exploring!
User avatar
Capricorn369
User avatar
Joined: 11 May 2011
Last visit: 06 May 2019
Posts: 232
Own Kudos:
225
 [1]
Given Kudos: 84
Schools: Wharton Exec '21 (WL) Berkeley EMBA"20 (A)
GMAT 1: 680 Q49 V30
Posts: 232
Kudos: 225
 [1]
Finite Length line 07 Oct 2011, 22:19
1
Kudos
Add Kudos
Bookmarks
Bookmark this Post
melguy
Hello all

I am having a bit of difficulty understanding as to why D is not the answer. Someone plz help

Thanks!
Show more

Good question.

Option D - x can have multiple values 2, 3, 4, 5, -2, -3, -4, -5, Hence finite length is not possible. Not an answer.
Option E - only x= 0 is only value which satisfy the equation. Hence, this is the only answer.

Hope it helps!
User avatar
denver2018
User avatar
Joined: 02 Sep 2011
Last visit: 07 Dec 2011
Posts: 8
Own Kudos:
1
Posts: 8
Kudos: 1
Finite Length line 07 Oct 2011, 23:25
Kudos
Add Kudos
Bookmarks
Bookmark this Post
I do not agree with you that the only choice in E is 0 because if you solve the equation. it will be
-2/3<= x<= 2/3 and that means more than one solution, but if the question said integer!! it will be as you said.

so , again why the answer is E and what is wrong with D
User avatar
fluke
User avatar
Retired Moderator
Joined: 20 Dec 2010
Last visit: 24 Oct 2013
Posts: 1,095
Own Kudos:
5,167
Given Kudos: 376
Posts: 1,095
Kudos: 5,167
Finite Length line 08 Oct 2011, 01:53
Kudos
Add Kudos
Bookmarks
Bookmark this Post
denver2018
I do not agree with you that the only choice in E is 0 because if you solve the equation. it will be
-2/3<= x<= 2/3 and that means more than one solution, but if the question said integer!! it will be as you said.

so , again why the answer is E and what is wrong with D
Show more

D's solution is:
-5<=x<=-2
OR
2<=x<=5

Thus, it is not a SINGLE line-segment. Solution gives us two line-segments with a gap between -2 and +2, exclusive.

A)
x>=1
OR
x<=-1
Two-infinite rays, gap between 1 and -1, exclusive.

B)
x^3<=27
x<=3
Infinite ray, not a line segment.

C)
x>=4
x<=-4
Two infinite rays.

E)
-2/3<=x<=2/3
Just one continuous line-segment.

Ans: "E"
User avatar
melguy
User avatar
Joined: 22 Mar 2011
Last visit: 25 Feb 2017
Posts: 37
Own Kudos:
54
Given Kudos: 10
Posts: 37
Kudos: 54
Finite Length line 10 Oct 2011, 02:19
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Quote:

D's solution is:
-5<=x<=-2
OR
2<=x<=5
Show more

Hi

Sorry I am still not clear. If I read what you wrote -> 2<=x<=5

I am reading it as x is greater than or equal to 2 and x is less than or equal to 5. So it means x would start at 2 and can be equal to or less than 5 (making it a finite length).
User avatar
fluke
User avatar
Retired Moderator
Joined: 20 Dec 2010
Last visit: 24 Oct 2013
Posts: 1,095
Own Kudos:
5,167
Given Kudos: 376
Posts: 1,095
Kudos: 5,167
Finite Length line 10 Oct 2011, 02:25
Kudos
Add Kudos
Bookmarks
Bookmark this Post
melguy
Quote:

D's solution is:
-5<=x<=-2
OR
2<=x<=5

Hi

Sorry I am still not clear. If I read what you wrote -> 2<=x<=5

I am reading it as x is greater than or equal to 2 and x is less than or equal to 5. So it means x would start at 2 and can be equal to or less than 5 (making it a finite length).
Show more

BOTH:
-5<=x<=-2
AND
2<=x<=5

So, there are TWO line-segments(finite-length). We want just ONE line-segment. See the picture.
Attachments

line_segments.gif
line_segments.gif [ 711 Bytes | Viewed 2963 times ]

User avatar
Spidy001
User avatar
Joined: 01 Feb 2011
Last visit: 16 Feb 2015
Posts: 298
Own Kudos:
355
Given Kudos: 42
Posts: 298
Kudos: 355
Finite Length line 10 Oct 2011, 21:16
Kudos
Add Kudos
Bookmarks
Bookmark this Post
1. x>=1 or x<=-1 not a finite length segment.

2. x<=3 not a finite length segment.

3. x>=4 or x<=-4 not a finite length segment.

4. 2<=x<=5 or -2>=x>-5 not one finite length segment.

5. -2/3 <=x<=2/3 finite length segment.

Answer is E.
User avatar
melguy
User avatar
Joined: 22 Mar 2011
Last visit: 25 Feb 2017
Posts: 37
Own Kudos:
54
Given Kudos: 10
Posts: 37
Kudos: 54
Finite Length line 10 Oct 2011, 21:26
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Spidy001
1. x>=1 or x=4 or x=x>-5 not one finite length segment.

5. -2/3 <=x<=2/3 finite length segment.

Answer is E.
Show more


Thanks Spidy.

From what I am gathering the absolute value is playing the main role here. Plz confirm if i understand it right.

e.g |x|<= 5
if we solve this then the solution will look something like below
-5 <= x <= 5



Archived Topic
Hi there,
This topic has been closed and archived due to inactivity or violation of community quality standards. No more replies are possible here.
Where to now? Join ongoing discussions on thousands of quality questions in our Problem Solving (PS) Forum
Still interested in this question? Check out the "Best Topics" block above for a better discussion on this exact question, as well as several more related questions.
Thank you for understanding, and happy exploring!
Moderator:
Bunuel
Math Expert
109763 posts