It is currently 17 Oct 2017, 15:56

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

Events & Promotions in June
Open Detailed Calendar

GMAT Prep

  post reply Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
Senior Manager
Senior Manager
User avatar
Joined: 04 Sep 2008
Posts: 250

Kudos [?]: 99 [0], given: 9

Location: Kolkata
Schools: La Martiniere for Boys
GMAT Prep [#permalink]

Show Tags

New post 07 Jun 2009, 21:22
00:00
A
B
C
D
E

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 0 sessions

HideShow timer Statistics

This topic is locked. If you want to discuss this question please re-post it in the respective forum.

All participants, Please explain your answers
Attachments

GMAT PREP 2 questions.doc [99 KiB]
Downloaded 127 times

To download please login or register as a user


_________________

Thanks
rampuria

Kudos [?]: 99 [0], given: 9

Manager
Manager
User avatar
Joined: 07 Jun 2009
Posts: 204

Kudos [?]: 44 [0], given: 9

Re: GMAT Prep [#permalink]

Show Tags

New post 07 Jun 2009, 23:28
I would do the second question first.
Now, we are to find if x and y are positive. Let us assume that x and y are integers.
According to (1) 2x - 2y = 1
if x= 1 y= 1/2, if x= 3/2 y= 1, if x= 2 y= 3/2, if x= -1 y= -3/2, if x= -1/2 y= -1 and so on... the statement is not self sufficient to conclude.
Second statement, x/y> 1
if x=1 y= 1/2, and when x= -1/2 y=-1, then only we get x/y > 1. Still we don't come to a conclusion.
Now even if we combine the 2 statements, we would not be ale to decide the sign of x and y.
Therefore, I go for 'E'.

The first question. 'k' lies between 1 and 10 inclusive. Since (-1)^k+1, therefore for every even value the term would be odd and for even odd value the term would be even. The terms that we get are 1/2, -1/4, 1/8, -1/16...-1/1024. by subtracting the successive terms we get all positive terms 1/4, 1/16, 1/64... 1/1024. now we add these terms, so if answer would be greater than 1/4 but, since the terms being added to 1/4 are very small, the answer would lie between 1/2 and 1/4, so I go for 'D'.
_________________

"Always....Read between the lines"

Kudos [?]: 44 [0], given: 9

Re: GMAT Prep   [#permalink] 07 Jun 2009, 23:28
Display posts from previous: Sort by

GMAT Prep

  post reply Question banks Downloads My Bookmarks Reviews Important topics  


GMAT Club MBA Forum Home| About| Terms and Conditions| 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®.