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

It is currently 10 Dec 2018, 18:27

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 lesson on number properties

     December 10, 2018

     December 10, 2018

     10:00 PM PST

     11:00 PM PST

    Practice the one most important Quant section - Integer properties, and rapidly improve your skills.
  • Free GMAT Prep Hour

     December 11, 2018

     December 11, 2018

     09:00 PM EST

     10:00 PM EST

    Strategies and techniques for approaching featured GMAT topics. December 11 at 9 PM EST.

If x is a negative integer, which of the following expressions has the

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

Hide Tags

Senior Manager
Senior Manager
User avatar
Joined: 11 Nov 2014
Posts: 334
Location: India
Concentration: Finance, International Business
WE: Project Management (Telecommunications)
GMAT ToolKit User Premium Member
If x is a negative integer, which of the following expressions has the  [#permalink]

Show Tags

New post Updated on: 26 Jan 2016, 08:00
00:00
A
B
C
D
E

Difficulty:

  5% (low)

Question Stats:

91% (00:33) correct 9% (01:05) wrong based on 87 sessions

HideShow timer Statistics

If x is a negative integer, which of the following expressions has the LEAST value?

A \(x^{2} - 0.50\)
B \(x^{2} - 0.51\)
C \(x^{3} - 0.502\)
D \(x^{3} - 0.511\)
E \(x^{4} - 0.512\)

Originally posted by paidlukkha on 26 Jan 2016, 07:57.
Last edited by Bunuel on 26 Jan 2016, 08:00, edited 1 time in total.
RENAMED THE TOPIC.
Math Expert
User avatar
V
Joined: 02 Aug 2009
Posts: 7100
Re: If x is a negative integer, which of the following expressions has the  [#permalink]

Show Tags

New post 26 Jan 2016, 08:04
paidlukkha wrote:
If x is a negative integer, which of the following expressions has the LEAST value?

A \(x^{2} - 0.50\)
B \(x^{2} - 0.51\)
C \(x^{3} - 0.502\)
D \(x^{3} - 0.511\)
E \(x^{4} - 0.512\)


Hi,
a solution in 20 secs would be..
since it is subtracting something from the power of x, the least would be something with term of x as negative..
x to the power of even number will give positive number and with odd power will give -ive ... so A,B and E can be eliminated..
in D, we are adding a bigger numeric value with a negative sign to another -ive ,x^3..
ans is D

Hope oit helps
_________________

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

CEO
CEO
User avatar
D
Joined: 11 Sep 2015
Posts: 3228
Location: Canada
If x is a negative integer, which of the following expressions has the  [#permalink]

Show Tags

New post 26 Jan 2016, 10:26
paidlukkha wrote:
If x is a negative integer, which of the following expressions has the LEAST value?

A \(x^{2} - 0.50\)
B \(x^{2} - 0.51\)
C \(x^{3} - 0.502\)
D \(x^{3} - 0.511\)
E \(x^{4} - 0.512\)


Let x = -1, so we get....
A \((-1)^{2} - 0.50\) = 1 - 0.50
B \((-1)^{2} - 0.51\) = 1 - 0.51
C \((-1)^{3} - 0.502\) = -1 - 0.502
D \((-1)^{3} - 0.511\) = -1 - 0.511
E \((-1)^{4} - 0.512\) = 1 - 0.512

A, B and E will result in POSITIVE values
C and D will result in NEGATIVE values
Eliminate A, B and E

Answer: D

Cheers,
Brent
_________________

Test confidently with gmatprepnow.com
Image

GMAT Club Bot
If x is a negative integer, which of the following expressions has the &nbs [#permalink] 26 Jan 2016, 10:26
Display posts from previous: Sort by

If x is a negative integer, which of the following expressions has the

  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®.