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

It is currently 24 Jul 2014, 04:19

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

If P is the set of integers and 3 is in P, is every positive

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
Current Student
User avatar
Joined: 31 Aug 2007
Posts: 370
Followers: 1

Kudos [?]: 38 [0], given: 1

GMAT Tests User
If P is the set of integers and 3 is in P, is every positive [#permalink] New post 12 Dec 2007, 08:05
00:00
A
B
C
D
E

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 0 sessions
Q. If P is the set of integers and 3 is in P, is every positive multiple of 3 in P?

a. For any integer in P, the sum of 3 and that integer is also in P.
b. For any integer in P, that integer minus 3 is also in P.
Director
Director
User avatar
Joined: 12 Jul 2007
Posts: 867
Followers: 12

Kudos [?]: 192 [0], given: 0

GMAT Tests User
 [#permalink] New post 12 Dec 2007, 08:20
I'm getting D for this one.

1. If 3 is in P and the sum of 3 and any integer in P is also in P then...

3+3 = 6 +3 = 9 + 3 = 12, etc all have to be in P

you can also go the other way and say

x +3 = 3 has to be in there (so 0, -3, -6, -9, etc all count)


2. If 3 is in P and any integer -3 is also in P

3-3 = 0 -3 = -3 -3 = -6 etc

and again, you can go the other way and say

x-3 = 3 so x = 6 and (3, 6, 9, 12, etc all count)

so my answer is D here.
Manager
Manager
avatar
Joined: 01 Sep 2007
Posts: 103
Location: Astana
Followers: 1

Kudos [?]: 16 [0], given: 0

 [#permalink] New post 12 Dec 2007, 08:45
Not sure but i think it is A because the question asks for a positive multiple of 3 and it does not follow from statement II.
Director
Director
User avatar
Joined: 12 Jul 2007
Posts: 867
Followers: 12

Kudos [?]: 192 [0], given: 0

GMAT Tests User
 [#permalink] New post 12 Dec 2007, 08:57
CaspAreaGuy wrote:
Not sure but i think it is A because the question asks for a positive multiple of 3 and it does not follow from statement II.



yeah, upon further review I'm going to agree with A.

I thought you could say that 3 is in the set, and x-3 = 3 so that means 6 is in the set. However, I made the assumption that because a number X is in the set, X +3 had to be as well.
  [#permalink] 12 Dec 2007, 08:57
    Similar topics Author Replies Last post
Similar
Topics:
6 Experts publish their posts in the topic If P is a set of integers and 3 is in P, is every positive Caffmeister 5 02 Jul 2010, 09:24
If P is a set of integers and 3 is in P, is every positive changhiskhan 3 20 Mar 2010, 11:33
If P is a set of integers and 3 is in P, is every positive prude_sb 4 02 Jul 2009, 19:33
If P is a set of integers and 3 is in P, is every positive vannu 6 13 May 2009, 18:59
If P is a set of integers and 3 is in P , is every positive troy3626 4 19 Aug 2007, 16:59
Display posts from previous: Sort by

If P is the set of integers and 3 is in P, is every positive

  Question banks Downloads My Bookmarks Reviews Important topics  


cron

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®.