Find all School-related info fast with the new School-Specific MBA Forum

It is currently 27 Aug 2016, 23:22
GMAT Club Tests

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.

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

Of the following sums, which is greatest ?

  post reply Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
Director
Director
User avatar
Joined: 25 Oct 2008
Posts: 607
Location: Kolkata,India
Followers: 11

Kudos [?]: 648 [0], given: 100

Of the following sums, which is greatest ? [#permalink]

Show Tags

New post 24 Jun 2009, 02:39
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.

Of the following sums, which is greatest ?

(A) 1/root 2 + 1/root 3+ 1/root 4+ 1/root 5

(B) 1/2^2 + 1/3^2 + 1/4^2 + 1/5^2

(C) 1/2^2 + 1/2^3 + 1/2^4 + 1/2^5

(D)1-1/2+1/3-1/4

(E) 1/2+1/3+1/4 +1/5

OA:A

Which is the easiest and fastest way to solve this problem??
_________________

http://gmatclub.com/forum/countdown-beginshas-ended-85483-40.html#p649902

1 KUDOS received
Senior Manager
Senior Manager
avatar
Joined: 23 Jun 2009
Posts: 355
Location: Turkey
Schools: UPenn, UMich, HKS, UCB, Chicago
Followers: 5

Kudos [?]: 124 [1] , given: 76

Re: Of the following sums, which is greatest ? [#permalink]

Show Tags

New post 24 Jun 2009, 02:45
1
This post received
KUDOS
This question is rather easy. Since the numerators are same. You will compare the denominators. The biggest denominator is the smallest number.
root n < n < n^2 < 2^n for almost every number (some are not but as n grows inequality holds true)
So B,C and E are smaller than A. Since E is greater than D. A is the biggest.
Director
Director
User avatar
Joined: 03 Jun 2009
Posts: 799
Location: New Delhi
WE 1: 5.5 yrs in IT
Followers: 83

Kudos [?]: 684 [0], given: 56

Re: Of the following sums, which is greatest ? [#permalink]

Show Tags

New post 24 Jun 2009, 03:02
maliyeci wrote:
This question is rather easy. Since the numerators are same. You will compare the denominators. The biggest denominator is the smallest number.
root n < n < n^2 < 2^n for almost every number (some are not but as n grows inequality holds true)
So B,C and E are smaller than A. Since E is greater than D. A is the biggest.


Kudos to you. I had a similar solution in my mind, except for an explanation for option D.
_________________

ISB 2011-12 thread | Ask ISB Alumni @ ThinkISB
All information related to Indian candidates and B-schools | Indian B-schools accepting GMAT scores
Self evaluation for Why MBA?

Re: Of the following sums, which is greatest ?   [#permalink] 24 Jun 2009, 03:02
Display posts from previous: Sort by

Of the following sums, which is greatest ?

  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 and phpBB SEO

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®.