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

It is currently 24 Oct 2014, 17:37

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

Is the positive integer n equal to the square of an integer?

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
Director
Director
avatar
Joined: 03 Jul 2003
Posts: 656
Followers: 2

Kudos [?]: 17 [0], given: 0

Is the positive integer n equal to the square of an integer? [#permalink] New post 13 Dec 2003, 20:52
00:00
A
B
C
D
E

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 0 sessions
Is the positive integer n equal to the square of an integer?
(1) For every prime number p, if p is a divisor of n, then so is p^2.
(2) SQRT(n) is an integer.
CEO
CEO
avatar
Joined: 15 Aug 2003
Posts: 3470
Followers: 60

Kudos [?]: 675 [0], given: 781

Re: G+ DS-4-17. [#permalink] New post 13 Dec 2003, 21:51
kpadma wrote:
Is the positive integer n equal to the square of an integer?
(1) For every prime number p, if p is a divisor of n, then so is p^2.
(2) SQRT(n) is an integer.



start with B. clearly sufficient

possible asnwerss..D or A

with A

say n = 36 p =2 , p^2 = 4
say n = 49 p = 7, p^2 = 49
say n = 125 p = 5 , p^2 = 25

A is also sufficient

D
Senior Manager
Senior Manager
avatar
Joined: 12 Oct 2003
Posts: 252
Location: USA
Followers: 1

Kudos [?]: 5 [0], given: 0

 [#permalink] New post 14 Dec 2003, 05:42
B

BG I took the same example. What if n is 18

n = 18
p = 3
n/p = 6
n / (p^2) = 2

but n is not a square of ...
CEO
CEO
avatar
Joined: 15 Aug 2003
Posts: 3470
Followers: 60

Kudos [?]: 675 [0], given: 781

 [#permalink] New post 14 Dec 2003, 06:41
BG wrote:
What about if N is 18 ?




we consider those #'s that satisfy that condition.

the given statements are facts..use them like facts.

you are trying to prove the statement wrong.
Director
Director
avatar
Joined: 13 Nov 2003
Posts: 801
Location: BULGARIA
Followers: 1

Kudos [?]: 21 [0], given: 0

 [#permalink] New post 14 Dec 2003, 09:33
Praet read the question and please note that it is: Is the positive integer n equal to the square of an integer?..From statement 1 we know that for every prime number p if p is a divisor of n then so is p^2..so n could be 4,9 but n could be 18 or 50, for example, which makes statement 1) insufficient since we can not say if n is a square of an integer
CEO
CEO
avatar
Joined: 15 Aug 2003
Posts: 3470
Followers: 60

Kudos [?]: 675 [0], given: 781

 [#permalink] New post 14 Dec 2003, 10:37
BG wrote:
Praet read the question and please note that it is: Is the positive integer n equal to the square of an integer?..From statement 1 we know that for every prime number p if p is a divisor of n then so is p^2..so n could be 4,9 but n could be 18 or 50, for example, which makes statement 1) insufficient since we can not say if n is a square of an integer



you miss the p^2 part.

let me rephrase.

1. If n is divisible by p, it is divisible by p^2 too.

you have to satisfy the above requirement.

18 is divisible by 2 , but not divisible by 2^2.

so 18 does NOT satisfy the requirement of statement 1.

Do NOT violate the FACT in (1).
Director
Director
avatar
Joined: 13 Nov 2003
Posts: 801
Location: BULGARIA
Followers: 1

Kudos [?]: 21 [0], given: 0

 [#permalink] New post 15 Dec 2003, 02:11
Think that 18 is divisible by 3 and 9 also .... :)
  [#permalink] 15 Dec 2003, 02:11
    Similar topics Author Replies Last post
Similar
Topics:
2 Experts publish their posts in the topic Is the positive integer n equal to the square of an integer? tracyyahoo 5 16 Jul 2011, 01:51
Is the positive integer n equal to the square of an integer? joyseychow 3 06 Aug 2009, 06:35
Is the positive integer n equal to the square of an integer? lahoosaher 5 24 Jun 2009, 01:57
1 Is the positive integer n equal to the square of an integer? nunny 6 22 Jul 2008, 18:29
Is the positive integer n equal to the square of an integer? el1981 5 29 Apr 2008, 17:11
Display posts from previous: Sort by

Is the positive integer n equal to the square of an integer?

  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®.