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

It is currently 16 Aug 2018, 05:09

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

Distance between x and y is greater than distance between x

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
Manager
Manager
avatar
Joined: 06 Oct 2010
Posts: 54
Distance between x and y is greater than distance between x  [#permalink]

Show Tags

New post Updated on: 10 Jul 2018, 21:09
2
00:00
A
B
C
D
E

Difficulty:

  55% (hard)

Question Stats:

65% (01:20) correct 35% (01:21) wrong based on 92 sessions

HideShow timer Statistics

Distance between x and y is greater than distance between x and z. Does z lie between x and y on the number line?

(1) xyz < 0
(2) xy < 0

OPEN DISCUSSION OF THIS QUESTION IS HERE: https://gmatclub.com/forum/on-the-numbe ... 27014.html

Originally posted by skbjunior on 18 May 2011, 15:18.
Last edited by Bunuel on 10 Jul 2018, 21:09, edited 2 times in total.
Retired Moderator
avatar
Joined: 20 Dec 2010
Posts: 1879
Re: Distance between x and y is greater than distance between x  [#permalink]

Show Tags

New post 18 May 2011, 15:58
1
skbjunior wrote:
Distance between x and y is greater than distance between x and z. Does z lie between x and y on the number line?
a. xyz < 0
b. xy < 0

Please provide explanation for your answer. Thank you!


1.
xyz < 0
Either only one of {x, y, z} is -ve or all three are negative.
Let me consider former(one -ve):

y=-1, z=0.9, x=1; |x-y|>|x-z|, z in between
OR
y=-1, z=1.1, x=1; ; |x-y|>|x-z|, z not in between

Not Sufficient.

2. xy < 0
Only one of x and y is -ve. No information about z. Not Sufficient.
Both the cases discussed in St1 above hold good.

Combining both;
Both the cases discussed above hold good.

Ans: "E"
_________________

~fluke

GMAT Club Premium Membership - big benefits and savings

Director
Director
avatar
Status: Impossible is not a fact. It's an opinion. It's a dare. Impossible is nothing.
Affiliations: University of Chicago Booth School of Business
Joined: 03 Feb 2011
Posts: 789
Reviews Badge
Re: Distance between x and y is greater than distance between x  [#permalink]

Show Tags

New post 18 May 2011, 20:13
I think if you realize the spatial arrangement of x y z on the numberline then this is easy

1. 2 cases possible

x | z y where | is the zero. z is between x and y. The answer is YES

or

z x | y

z is NOT between x and y. The answer is NO

Insufficient

2. This is useless. Since there is no constraint on z. z may bet or may not between x and y. No need to evaluate. Hence insufficient

Combining 1) + 2) Insufficient

2 cases possible

x z | y

The answer is YES

or

y | x z

The answer is NO

Hence E.

PS : In almost all the questions with spatial arrangement of three points x y z, I have very few answers with C. Most of these DS questions are inconclusive. If you are short of time and have just 30 secs - ensure that C is not going to work and you are good.

skbjunior wrote:
Distance between x and y is greater than distance between x and z. Does z lie between x and y on the number line?
a. xyz < 0
b. xy < 0

Please provide explanation for your answer. Thank you!
VP
VP
avatar
Status: There is always something new !!
Affiliations: PMI,QAI Global,eXampleCG
Joined: 08 May 2009
Posts: 1125
Re: Distance between x and y is greater than distance between x  [#permalink]

Show Tags

New post 18 May 2011, 21:52
a x,y,z all can be negative | x or y or z can be negative. Not sufficient.

b x|y negative giving nothing about Z.

a+b

x= -10 y = 10 , z = 1 Z is in between. yes
y= -10 x = 1, z=2 Z is outside. No.

Hence E.
_________________

Visit -- http://www.sustainable-sphere.com/
Promote Green Business,Sustainable Living and Green Earth !!

Retired Moderator
avatar
B
Joined: 16 Nov 2010
Posts: 1460
Location: United States (IN)
Concentration: Strategy, Technology
Premium Member Reviews Badge
Re: Distance between x and y is greater than distance between x  [#permalink]

Show Tags

New post 19 May 2011, 05:36
(1)

z--------0---x----------------y


x--------0---z----------------y


Insufficient

(2)


x--------0---z----------------y

z-----x--------0-------------------y

Insufficient

(1) + (2)

From Diagram in (2)

Insufficient

Answer - E
_________________

Formula of Life -> Achievement/Potential = k * Happiness (where k is a constant)

GMAT Club Premium Membership - big benefits and savings

Manager
Manager
avatar
Joined: 02 Nov 2010
Posts: 89
Location: india
WE 1: 1.3
Reviews Badge
Re: Distance between x and y is greater than distance between x  [#permalink]

Show Tags

New post 05 Jun 2011, 07:55
question states that d(x,y)>d(x,z) also from (1) and (2) we know that z is positive
(as xy<0=>z>0)
thus looking at above conditions we can say that z is between x and y
where am i going wrong
Math Expert
User avatar
V
Joined: 02 Sep 2009
Posts: 47923
Re: Distance between x and y is greater than distance between x  [#permalink]

Show Tags

New post 10 Jul 2018, 21:09
skbjunior wrote:
Distance between x and y is greater than distance between x and z. Does z lie between x and y on the number line?

(1) xyz < 0
(2) xy < 0



OPEN DISCUSSION OF THIS QUESTION IS HERE: https://gmatclub.com/forum/on-the-numbe ... 27014.html
_________________

New to the Math Forum?
Please read this: Ultimate GMAT Quantitative Megathread | All You Need for Quant | PLEASE READ AND FOLLOW: 12 Rules for Posting!!!

Resources:
GMAT Math Book | Triangles | Polygons | Coordinate Geometry | Factorials | Circles | Number Theory | Remainders; 8. Overlapping Sets | PDF of Math Book; 10. Remainders | GMAT Prep Software Analysis | SEVEN SAMURAI OF 2012 (BEST DISCUSSIONS) | Tricky questions from previous years.

Collection of Questions:
PS: 1. Tough and Tricky questions; 2. Hard questions; 3. Hard questions part 2; 4. Standard deviation; 5. Tough Problem Solving Questions With Solutions; 6. Probability and Combinations Questions With Solutions; 7 Tough and tricky exponents and roots questions; 8 12 Easy Pieces (or not?); 9 Bakers' Dozen; 10 Algebra set. ,11 Mixed Questions, 12 Fresh Meat

DS: 1. DS tough questions; 2. DS tough questions part 2; 3. DS tough questions part 3; 4. DS Standard deviation; 5. Inequalities; 6. 700+ GMAT Data Sufficiency Questions With Explanations; 7 Tough and tricky exponents and roots questions; 8 The Discreet Charm of the DS; 9 Devil's Dozen!!!; 10 Number Properties set., 11 New DS set.


What are GMAT Club Tests?
Extra-hard Quant Tests with Brilliant Analytics

Re: Distance between x and y is greater than distance between x &nbs [#permalink] 10 Jul 2018, 21:09
Display posts from previous: Sort by

Distance between x and y is greater than distance between x

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

Events & Promotions

PREV
NEXT


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®.