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

It is currently 13 Jul 2014, 17:52

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

Set S consists of 5 consecutive integers, and set T consists

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
VP
VP
avatar
Joined: 22 Nov 2007
Posts: 1101
Followers: 6

Kudos [?]: 102 [0], given: 0

GMAT Tests User
Set S consists of 5 consecutive integers, and set T consists [#permalink] New post 11 Mar 2008, 11:31
Set S consists of 5 consecutive integers, and set T consists of seven consecutive
integers. Is the median of the numbers in set S equal to the median of the
numbers in set T?

(1) The median of the numbers in set S is 0.
(2) The sum of the numbers in set S is equal to the sum of the numbers in
set T.
Director
Director
avatar
Joined: 10 Sep 2007
Posts: 950
Followers: 7

Kudos [?]: 179 [0], given: 0

GMAT Tests User
Re: gmatprep stats [#permalink] New post 11 Mar 2008, 16:13
1) The median of the numbers in set S is 0.
That means there is equal number of terms greater than and less than 0.
But this tells you nothing about Set T's relation with So question cannot be answered alone with this statement.

(2) The sum of the numbers in set S is equal to the sum of the numbers in set T.
There are infinite possibilites that sum of number is set S is equal to sum of numbers in set T, so this also cannot answer alone.

Combining these 2 has interesting effect:
Now we know that S is having median 0, so equal number of +ve and -ve numbers should be there.
S = (-2,-1,0,1,2) (This is only possibility since numbers have to be consecutive)
Note also that Sum is also 0 for set S.
So now only way we have 7 consecutive numbers resulting in 0 sum is
T = (-3,-2,-1,0,1,2,3)
So we can tell median to T is also 0.

Answer C.
VP
VP
avatar
Joined: 22 Nov 2007
Posts: 1101
Followers: 6

Kudos [?]: 102 [0], given: 0

GMAT Tests User
Re: gmatprep stats [#permalink] New post 17 Mar 2008, 01:06
marcodonzelli wrote:
Set S consists of 5 consecutive integers, and set T consists of seven consecutive
integers. Is the median of the numbers in set S equal to the median of the
numbers in set T?

(1) The median of the numbers in set S is 0.
(2) The sum of the numbers in set S is equal to the sum of the numbers in
set T.



the key is that the numbers are consecutive, so we have an arithmetic sequence where the mean equals the median.
1. obviously doesn't say anything alone
2. if s is the sum of the elements in S, the mean=median=s/5; and for T, the mean=median=s/7. s/5=s/7 only when s=0

c. s=0 suff
CEO
CEO
User avatar
Joined: 29 Mar 2007
Posts: 2593
Followers: 16

Kudos [?]: 174 [0], given: 0

GMAT Tests User
Re: gmatprep stats [#permalink] New post 17 Mar 2008, 13:17
marcodonzelli wrote:
marcodonzelli wrote:
Set S consists of 5 consecutive integers, and set T consists of seven consecutive
integers. Is the median of the numbers in set S equal to the median of the
numbers in set T?

(1) The median of the numbers in set S is 0.
(2) The sum of the numbers in set S is equal to the sum of the numbers in
set T.



the key is that the numbers are consecutive, so we have an arithmetic sequence where the mean equals the median.
1. obviously doesn't say anything alone
2. if s is the sum of the elements in S, the mean=median=s/5; and for T, the mean=median=s/7. s/5=s/7 only when s=0

c. s=0 suff


Shouldnt the answer be B


Sum of set T= sum of set S. T and S are both sets of consecutive integers. I can't find a a way for sum of set T= sum of set S when they are both consecutive sets unless the median is 0.
CEO
CEO
User avatar
Joined: 29 Aug 2007
Posts: 2501
Followers: 51

Kudos [?]: 475 [0], given: 19

GMAT Tests User
Re: gmatprep stats [#permalink] New post 17 Mar 2008, 20:37
GMATBLACKBELT wrote:
marcodonzelli wrote:
marcodonzelli wrote:
Set S consists of 5 consecutive integers, and set T consists of seven consecutiveintegers. Is the median of the numbers in set S equal to the median of thenumbers in set T?(1) The median of the numbers in set S is 0.(2) The sum of the numbers in set S is equal to the sum of the numbers inset T.
the key is that the numbers are consecutive, so we have an arithmetic sequence where the mean equals the median. 1. obviously doesn't say anything alone2. if s is the sum of the elements in S, the mean=median=s/5; and for T, the mean=median=s/7. s/5=s/7 only when s=0c. s=0 suff
  Shouldnt the answer be BSum of set T= sum of set S.  T and S are both sets of consecutive integers.  I can't find a a way for sum of set T= sum of set S when they are both consecutive sets unless the median is 0.

C.

from B:
S = 5, 6, 7 ,8, 9. median = 7 and sum = 35
T = 2, 3, 4, 5, 6, 7, 8. median = 5 and sum = 35so not sufficient.
from 1 and 2: S = -2, -1, 0, 1, 2. median = 0 and sum = 0
T = -3, -2, -1, 0, 1, 2, 3. median = 0 and sum = 0
_________________

Verbal: new-to-the-verbal-forum-please-read-this-first-77546.html
Math: new-to-the-math-forum-please-read-this-first-77764.html
Gmat: everything-you-need-to-prepare-for-the-gmat-revised-77983.html


GT

Re: gmatprep stats   [#permalink] 17 Mar 2008, 20:37
    Similar topics Author Replies Last post
Similar
Topics:
Set S consists of 5 consecutive integers and set T consists bhushangiri 18 05 Sep 2008, 07:58
4 Experts publish their posts in the topic Set S consists of 5 consecutive integers, and set T consists nischalb 5 04 Nov 2006, 03:25
set S consists of 5 consecutive integers, and set T consists cejismundo 3 16 Sep 2006, 19:32
Set S consistes of 5 consecutive integers, Set T consists of BG 11 16 May 2006, 23:23
Set S consists of 5 consecutive integers. Set T consists of AJB77 10 18 Aug 2005, 08:07
Display posts from previous: Sort by

Set S consists of 5 consecutive integers, and set T consists

  Question banks Downloads My Bookmarks Reviews Important topics  


GMAT Club MBA Forum Home| About| Privacy Policy| 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®.