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

It is currently 25 May 2019, 00:25

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

X is a set containing 7 different numbers. Y is a set containing 6 dif

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

Hide Tags

 
Current Student
User avatar
G
Joined: 04 Feb 2014
Posts: 223
Location: India
Concentration: General Management, Entrepreneurship
GPA: 3
WE: Project Management (Manufacturing)
GMAT ToolKit User
X is a set containing 7 different numbers. Y is the set containing 6  [#permalink]

Show Tags

New post 05 Jul 2017, 09:57
1
6
00:00
A
B
C
D
E

Difficulty:

  85% (hard)

Question Stats:

45% (01:50) correct 55% (01:47) wrong based on 73 sessions

HideShow timer Statistics

X is a set containing 7 different numbers. Y is the set containing 6 different positive numbers all of which are members of set X. Is the mean of X equal to the mean of Y?

a) Range of X is greater than range of Y
b) Sum of all the numbers in set X< Sum of all the numbers in set Y

_________________
Kudos if you like my post
Math Expert
User avatar
V
Joined: 02 Aug 2009
Posts: 7686
X is a set containing 7 different numbers. Y is a set containing 6 dif  [#permalink]

Show Tags

New post 05 Jul 2017, 10:36
1
2
anurag16 wrote:
X is a set containing 7 different numbers. Y is the set containing 6 different positive numbers all of which are members of set X. Is the mean of X equal to the mean of Y?

a) Range of X is greater than range of Y
b) Sum of all the numbers in set X< Sum of all the numbers in set Y



Hi..
If all 7 numbers are different and 6 of them have a certain MEAN, M..
This would be EQUAL to mean of 7 numbers ONLY when 7th number itself is EQUAL to M
...

Let's see the statements...

a) Range of X is greater than range of Y
This means the 7th number is either greater than or less than the 6 numbers in set Y..
So the 7 number cannot be EQUAL to mean of 6 numbers..
Ans is NO

Sufficient

b) Sum of all the numbers in set X< Sum of all the numbers in set Y
Clearly a lower number /7 will be less than greater number/6..
Clearly mean of Y>mean of X..
Ans is again NO

Sufficient

D
_________________
Intern
Intern
User avatar
B
Status: Engineer
Joined: 31 Oct 2016
Posts: 1
X is a set containing 7 different numbers. Y is a set containing 6 dif  [#permalink]

Show Tags

New post 30 Sep 2017, 21:25
X is a set containing 7 different numbers. Y is a set containing 6 different positive numbers, all of which are members of set X. Is the mean of X equal to the mean of Y ?

A. Range of X is greater than range of Y.

B. (Sum of all the numbers in set X) < (Sum of all numbers in set Y).
Math Expert
User avatar
V
Joined: 02 Aug 2009
Posts: 7686
Re: X is a set containing 7 different numbers. Y is a set containing 6 dif  [#permalink]

Show Tags

New post 30 Sep 2017, 22:26
1
Kamlesh44 wrote:
X is a set containing 7 different numbers. Y is a set containing 6 different positive numbers, all of which are members of set X. Is the mean of X equal to the mean of Y ?

A. Range of X is greater than range of Y.

B. (Sum of all the numbers in set X) < (Sum of all numbers in set Y).


Pl search before posting a new Q.
refer to discussion above
_________________
Manager
Manager
User avatar
B
Joined: 04 Dec 2015
Posts: 96
WE: Operations (Commercial Banking)
Re: X is a set containing 7 different numbers. Y is a set containing 6 dif  [#permalink]

Show Tags

New post 06 Apr 2019, 04:29
chetan2u VeritasKarishma Bunuel

range of x is greater than that of y , we can infer that the sum of numbers in x can never be equal to the sum of numbers in y... right? hence sufficient ??
Intern
Intern
avatar
Joined: 28 Nov 2018
Posts: 4
Re: X is a set containing 7 different numbers. Y is a set containing 6 dif  [#permalink]

Show Tags

New post 07 Apr 2019, 03:07
How /7 is smaller than /6 ?
kindly explain
Manager
Manager
avatar
B
Joined: 28 Jan 2019
Posts: 88
Location: India
Re: X is a set containing 7 different numbers. Y is a set containing 6 dif  [#permalink]

Show Tags

New post 07 Apr 2019, 03:48
GGMU wrote:
X is a set containing 7 different numbers. Y is the set containing 6 different positive numbers all of which are members of set X. Is the mean of X equal to the mean of Y?

a) Range of X is greater than range of Y
b) Sum of all the numbers in set X< Sum of all the numbers in set Y


How can the sum of the numbers in X be less than the sum of the numbers in Y when all the numbers of Y are from X?
_________________
"Luck is when preparation meets opportunity!"
GMAT Club Bot
Re: X is a set containing 7 different numbers. Y is a set containing 6 dif   [#permalink] 07 Apr 2019, 03:48
Display posts from previous: Sort by

X is a set containing 7 different numbers. Y is a set containing 6 dif

  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®.