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

 It is currently 29 Apr 2016, 17:37

### 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

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

# Events & Promotions

###### Events & Promotions in June
Open Detailed Calendar

# m14 q18

Author Message
Intern
Joined: 25 Jan 2011
Posts: 15
Concentration: Marketing, Entrepreneurship
Schools: Foster (M)
GPA: 3.62
WE: Design (Other)
Followers: 0

Kudos [?]: 7 [0], given: 2

### Show Tags

31 Oct 2011, 12:44
I'm pretty confused on the question below...

If set $$S$$ consists of distinct numbers such that the difference between any two different elements of set $$S$$ is an integer, how many elements does set $$S$$ contain?

1 The difference between any two different elements of set $$S$$ is 2.
2 The range of set $$S$$ is 2.

Statement (1) by itself is sufficient. S1 says that there are only two different elements in the set. As all elements in the set are distinct, we can conclude that set $$S$$ contains 2 elements.

Statement (2) by itself is insufficient. Consider $$(-1, 0, 1)$$ and $$(0, 2)$$ .

Am I missing something here? Where on earth does it say in S1 that there are only two elements in the set? To me, it says that the difference between ANY two elements is 2. Which means that the set could be (0,2,4,6,8,12) or just (2,4).

Can anyone please offer an explanation?
Math Forum Moderator
Joined: 20 Dec 2010
Posts: 2022
Followers: 154

Kudos [?]: 1415 [0], given: 376

### Show Tags

31 Oct 2011, 13:30
ModRos wrote:
I'm pretty confused on the question below...

If set $$S$$ consists of distinct numbers such that the difference between any two different elements of set $$S$$ is an integer, how many elements does set $$S$$ contain?

1 The difference between any two different elements of set $$S$$ is 2.
2 The range of set $$S$$ is 2.

Statement (1) by itself is sufficient. S1 says that there are only two different elements in the set. As all elements in the set are distinct, we can conclude that set $$S$$ contains 2 elements.

Statement (2) by itself is insufficient. Consider $$(-1, 0, 1)$$ and $$(0, 2)$$ .

Am I missing something here? Where on earth does it say in S1 that there are only two elements in the set? To me, it says that the difference between ANY two elements is 2. Which means that the set could be (0,2,4,6,8,12) or just (2,4).

Can anyone please offer an explanation?

ANY two means ANY two, not just the consecutive two:
(0,2,4,6,8,12)
0-2=2
2-4=2
4-6=2
OKAY
_________________
Intern
Joined: 25 Jan 2011
Posts: 15
Concentration: Marketing, Entrepreneurship
Schools: Foster (M)
GPA: 3.62
WE: Design (Other)
Followers: 0

Kudos [?]: 7 [0], given: 2

### Show Tags

31 Oct 2011, 13:48
Oh geez. That was so obvious, my brain just didn't "see" it for some reason. Thank you!
Re: m14 q18   [#permalink] 31 Oct 2011, 13:48
Similar topics Replies Last post
Similar
Topics:
m09 Q 18 2 07 Aug 2010, 16:22
2 m11 Q18 8 08 Jul 2010, 14:13
1 M16 Q18 2 04 Apr 2010, 13:49
5 m10 q18 16 29 Dec 2008, 23:01
1 m07q18 16 23 Jul 2008, 05:58
Display posts from previous: Sort by

# m14 q18

Moderator: Bunuel

 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®.