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

It is currently 22 Jul 2014, 05:42

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 a two-digit number PQ even? (1) GCD of P and Q is 1 (2) P

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
SVP
SVP
User avatar
Joined: 05 Jul 2006
Posts: 1542
Followers: 5

Kudos [?]: 65 [0], given: 39

Is a two-digit number PQ even? (1) GCD of P and Q is 1 (2) P [#permalink] New post 12 Oct 2006, 15:42
Is a two-digit number PQ even?

(1) GCD of P and Q is 1
(2) P is even
Senior Manager
Senior Manager
User avatar
Joined: 31 Jul 2006
Posts: 440
Followers: 3

Kudos [?]: 6 [0], given: 0

GMAT Tests User
Re: GCD [#permalink] New post 12 Oct 2006, 16:23
Is a two-digit number PQ even?

(1) GCD of P and Q is 1
Could be 32 or 23

(2) P is even
Could be 22 or 21

1 and 2)
If P is Even and GCD is 1 then Q can't be a multiple of 2 (i.e. can't be even)

C.
Intern
Intern
avatar
Joined: 05 Oct 2006
Posts: 15
Followers: 0

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

 [#permalink] New post 12 Oct 2006, 16:26
C

1) P could be 3 and Q could be 4 (GCD is 1) making PQ even or
P could be 3 and Q coulc be 5 (GCD is still 1) making PQ odd

Not Suff

2) P is even. So if Q is odd, PQ is Odd and if Q is even PQ is even.
Not suff

from 1 and 2
If P is even and if GCD of P and Q is 1 then Q needs to be odd, making PQ odd all the time
Director
Director
avatar
Joined: 23 Jun 2005
Posts: 847
GMAT 1: 740 Q48 V42
Followers: 3

Kudos [?]: 21 [0], given: 1

GMAT Tests User
 [#permalink] New post 12 Oct 2006, 18:07
C

Statement 1:
The two digits cannot be both even. INSUFF

Statement 2:
P is even, PQ can be 23 or 24 INSUFF

Together,
Since P is even, Q cannot be even. SUFF
  [#permalink] 12 Oct 2006, 18:07
    Similar topics Author Replies Last post
Similar
Topics:
4 Experts publish their posts in the topic If 2p not equal to -q, is (2p-q)/(2p+q)>1? eeakkan 13 05 Nov 2012, 12:24
If p,q and r are integers, is pq+r even? 1) p+r is even GMATD11 3 10 Mar 2011, 12:18
10 Experts publish their posts in the topic If p and q are negative, is p/q > 1 rxs0005 14 07 Feb 2011, 06:08
Is P + Q > 1/P + 1/Q? 1. P < Q < 1 2. P*Q < 1 bmwhype2 5 17 Oct 2007, 11:06
What is the value of (2^p)*(4^-q)? 1) p=2q 2) p=q getzgetzu 1 06 May 2006, 02:53
Display posts from previous: Sort by

Is a two-digit number PQ even? (1) GCD of P and Q is 1 (2) P

  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®.