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

It is currently 19 May 2019, 05:38

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

K is a set of integers such that if the integer r is in K,

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
Manager
Manager
User avatar
Joined: 06 Apr 2010
Posts: 112
Reviews Badge
K is a set of integers such that if the integer r is in K,  [#permalink]

Show Tags

New post 23 Aug 2010, 08:56
00:00
A
B
C
D
E

Difficulty:

  35% (medium)

Question Stats:

82% (00:37) correct 18% (00:00) wrong based on 11 sessions

HideShow timer Statistics

K is a set of integers such that if the integer r is in K, then r + 1 is also in K. Is 100 in K?
(1) 50 is in K.
(2) 150 is in K.

OPEN DISCUSSION OF THIS QUESTION IS HERE: k-is-a-set-of-integers-such-that-if-the-integer-r-is-in-k-103005.html

--== Message from the GMAT Club Team ==--

THERE IS LIKELY A BETTER DISCUSSION OF THIS EXACT QUESTION.
This discussion does not meet community quality standards. It has been retired.


If you would like to discuss this question please re-post it in the respective forum. Thank you!

To review the GMAT Club's Forums Posting Guidelines, please follow these links: Quantitative | Verbal Please note - we may remove posts that do not follow our posting guidelines. Thank you.
Current Student
User avatar
Status: What's your raashee?
Joined: 12 Jun 2009
Posts: 1756
Location: United States (NC)
Concentration: Strategy, Finance
Schools: UNC (Kenan-Flagler) - Class of 2013
GMAT 1: 720 Q49 V39
WE: Programming (Computer Software)
Reviews Badge
Re: K is a set of integers such that if the integer r is in K,  [#permalink]

Show Tags

New post 23 Aug 2010, 09:53
1. so we know 50 is in K. by definition the 50+1 = 51 is also in K. since 51 is in K then again by definition 51+1=52 is in K... so basically K is a set of numbers 50 to infinity which includes 100. SUFF

2. by same logic as 1, we know 150 to infinity is in K DEFINITELY. However, we dont know the starting point of the set - it could be 50 which includes 100 BUT it could also be 150 which excludes 100 so INSUFF.

A
_________________
If you like my answers please +1 kudos!
Manager
Manager
avatar
Joined: 14 Jun 2010
Posts: 193
Re: K is a set of integers such that if the integer r is in K,  [#permalink]

Show Tags

New post 31 Aug 2010, 23:22
Should be A....Same reasoning as shaselai
Intern
Intern
avatar
Joined: 01 Aug 2010
Posts: 14
Re: K is a set of integers such that if the integer r is in K,  [#permalink]

Show Tags

New post 01 Sep 2010, 08:24
I do not understand, since we dont know the end limit of the set, how can we assume that it ends at infinity.
Should the answer be C? since the limits of the set are defined
Retired Moderator
User avatar
Status: 2000 posts! I don't know whether I should feel great or sad about it! LOL
Joined: 04 Oct 2009
Posts: 1092
Location: Peru
Schools: Harvard, Stanford, Wharton, MIT & HKS (Government)
WE 1: Economic research
WE 2: Banking
WE 3: Government: Foreign Trade and SMEs
Re: K is a set of integers such that if the integer r is in K,  [#permalink]

Show Tags

New post 01 Sep 2010, 09:15
+1 A
Cannot be B because probably 150 is the first number in the sequence. So, 100 wouldn't be in the set.

I think I deserve kudos ;)
_________________
"Life’s battle doesn’t always go to stronger or faster men; but sooner or later the man who wins is the one who thinks he can."

My Integrated Reasoning Logbook / Diary: http://gmatclub.com/forum/my-ir-logbook-diary-133264.html

GMAT Club Premium Membership - big benefits and savings
Math Expert
User avatar
V
Joined: 02 Sep 2009
Posts: 55148
Re: K is a set of integers such that if the integer r is in K,  [#permalink]

Show Tags

New post 14 Aug 2017, 06:33
udaymathapati wrote:
K is a set of integers such that if the integer r is in K, then r + 1 is also in K. Is 100 in K?
(1) 50 is in K.
(2) 150 is in K.



(1) 50 is in K --> integers more than or equal to 50 are in the set K, so 100 is in the K. Sufficient.

(2) 150 is in K --> integers more than or equal to 150 are in the set K, so 100 may or may not be in the K (if the source integer is 100 or less then 100 is in K but if the source integer is more than 100 then 100 is not in K). Not sufficient.

Answer: A.

OPEN DISCUSSION OF THIS QUESTION IS HERE: k-is-a-set-of-integers-such-that-if-the-integer-r-is-in-k-103005.html

--== Message from the GMAT Club Team ==--

THERE IS LIKELY A BETTER DISCUSSION OF THIS EXACT QUESTION.
This discussion does not meet community quality standards. It has been retired.


If you would like to discuss this question please re-post it in the respective forum. Thank you!

To review the GMAT Club's Forums Posting Guidelines, please follow these links: Quantitative | Verbal Please note - we may remove posts that do not follow our posting guidelines. Thank you.

_________________
GMAT Club Bot
Re: K is a set of integers such that if the integer r is in K,   [#permalink] 14 Aug 2017, 06:33
Display posts from previous: Sort by

K is a set of integers such that if the integer r is in K,

  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®.