GMAT Question of the Day - Daily to your Mailbox; hard ones only

It is currently 15 Dec 2018, 05:55

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.

Close

Request Expert Reply

Confirm Cancel
Events & Promotions in December
PrevNext
SuMoTuWeThFrSa
2526272829301
2345678
9101112131415
16171819202122
23242526272829
303112345
Open Detailed Calendar
  • Free GMAT Strategy Webinar

     December 15, 2018

     December 15, 2018

     07:00 AM PST

     09:00 AM PST

    Aiming to score 760+? Attend this FREE session to learn how to Define your GMAT Strategy, Create your Study Plan and Master the Core Skills to excel on the GMAT.
  • $450 Tuition Credit & Official CAT Packs FREE

     December 15, 2018

     December 15, 2018

     10:00 PM PST

     11:00 PM PST

    Get the complete Official GMAT Exam Pack collection worth $100 with the 3 Month Pack ($299)

(|x| - 1)/(x - 1) =?

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:

Hide Tags

Intern
Intern
avatar
Joined: 29 Nov 2015
Posts: 11
(|x| - 1)/(x - 1) =?  [#permalink]

Show Tags

New post 13 Jan 2016, 22:36
11
00:00
A
B
C
D
E

Difficulty:

  35% (medium)

Question Stats:

69% (01:06) correct 31% (01:04) wrong based on 308 sessions

HideShow timer Statistics

(|x| - 1)/(x - 1) =?

(1) x < 0
(2) |x| = -x
Most Helpful Expert Reply
Math Expert
User avatar
V
Joined: 02 Aug 2009
Posts: 7107
Re: (|x| - 1)/(x - 1) =?  [#permalink]

Show Tags

New post 13 Jan 2016, 23:08
5
4
fattty wrote:
(|x| - 1)/(x - 1) =?

(1) x < 0
(2) |x| = -x


Hi,
if we look at the eq..
(|x| - 1)/(x - 1) ..

the value depends on :-
1) if x is 0 or +ive, ans is 1, irrespective of value of x..
2) if x is -ive, the value of denominator and numerator changes, and the equations value will depend on value of x..

lets see the statements now..
(1) x < 0
here x is negative , so the value depends on value of x.. insuff

(2) |x| = -x
again value of x is -ive.. insuff..

combined .nothing new.. insuff
E..

just for knowledge...
Why x is -ive in statement 2..
|x| = -x..
The LHS is positive because it is absolute mod, so RHS will also be positive..
RHS=-x... now -x will become positive only when x is -ive

_________________

1) Absolute modulus : http://gmatclub.com/forum/absolute-modulus-a-better-understanding-210849.html#p1622372
2)Combination of similar and dissimilar things : http://gmatclub.com/forum/topic215915.html
3) effects of arithmetic operations : https://gmatclub.com/forum/effects-of-arithmetic-operations-on-fractions-269413.html


GMAT online Tutor

General Discussion
Math Expert
User avatar
V
Joined: 02 Sep 2009
Posts: 51218
Re: (|x| - 1)/(x - 1) =?  [#permalink]

Show Tags

New post 13 Jul 2017, 02:37
Director
Director
User avatar
P
Joined: 13 Mar 2017
Posts: 666
Location: India
Concentration: General Management, Entrepreneurship
GPA: 3.8
WE: Engineering (Energy and Utilities)
CAT Tests
Re: (|x| - 1)/(x - 1) =?  [#permalink]

Show Tags

New post 13 Jul 2017, 03:10
fattty wrote:
(|x| - 1)/(x - 1) =?

(1) x < 0
(2) |x| = -x



Given : Nothing
DS : (|x| - 1)/(x - 1) =?

Option 1: x < 0 ,
So, |x| = -x
(|x| - 1)/(x - 1) = (-x-1)/(x-1)
NOT SUFFICIENT

Option 2: |x| = -x
(|x| - 1)/(x - 1) = (-x-1)/(x-1)
NOT SUFFICIENT

Answer E

_________________

CAT 2017 99th percentiler : VA 97.27 | DI-LR 96.84 | QA 98.04 | OA 98.95
UPSC Aspirants : Get my app UPSC Important News Reader from Play store.

MBA Social Network : WebMaggu


Appreciate by Clicking +1 Kudos ( Lets be more generous friends.)



What I believe is : "Nothing is Impossible, Even Impossible says I'm Possible" : "Stay Hungry, Stay Foolish".

Intern
Intern
avatar
B
Joined: 22 Nov 2016
Posts: 8
CAT Tests
Re: (|x| - 1)/(x - 1) =?  [#permalink]

Show Tags

New post 17 Sep 2018, 06:39
chetan2u what is mod of 0? Is it zero or undefined?
If its undefined, why do we say that |x| >=0. I think i am getting confused between 2 things.
Please advise
Thanks in advance
Siddharth
Math Expert
User avatar
V
Joined: 02 Aug 2009
Posts: 7107
Re: (|x| - 1)/(x - 1) =?  [#permalink]

Show Tags

New post 17 Sep 2018, 07:06
Sidbendale1 wrote:
chetan2u what is mod of 0? Is it zero or undefined?
If its undefined, why do we say that |x| >=0. I think i am getting confused between 2 things.
Please advise
Thanks in advance
Siddharth



Siddharth,

|0|=0, it is not undefined..
Modulus just removes the negative sign
_________________

1) Absolute modulus : http://gmatclub.com/forum/absolute-modulus-a-better-understanding-210849.html#p1622372
2)Combination of similar and dissimilar things : http://gmatclub.com/forum/topic215915.html
3) effects of arithmetic operations : https://gmatclub.com/forum/effects-of-arithmetic-operations-on-fractions-269413.html


GMAT online Tutor

Intern
Intern
avatar
B
Joined: 11 Nov 2018
Posts: 1
(|x| - 1)/(x - 1) =?  [#permalink]

Show Tags

New post 14 Nov 2018, 08:45
chetan2u wrote:
fattty wrote:
(|x| - 1)/(x - 1) =?

(1) x < 0
(2) |x| = -x


Hi,
if we look at the eq..
(|x| - 1)/(x - 1) ..

the value depends on :-
1) if x is 0 or +ive, ans is 1, irrespective of value of x..
2) if x is -ive, the value of denominator and numerator changes, and the equations value will depend on value of x..

lets see the statements now..
(1) x < 0
here x is negative , so the value depends on value of x.. insuff

(2) |x| = -x
again value of x is -ive.. insuff..

combined .nothing new.. insuff
E..

just for knowledge...
Why x is -ive in statement 2..
|x| = -x..
The LHS is positive because it is absolute mod, so RHS will also be positive..
RHS=-x... now -x will become positive only when x is -ive




Firstly this statement isn't correct: "1) if x is 0 or +ive, ans is 1, irrespective of value of x.."
If x is equal to 1 then ans is 0.
Secondly shouldn't 0 be the only solution for this: |x| = -x since |x| can never be negative.
GMAT Club Bot
(|x| - 1)/(x - 1) =? &nbs [#permalink] 14 Nov 2018, 08:45
Display posts from previous: Sort by

(|x| - 1)/(x - 1) =?

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  


Copyright

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

Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne

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®.