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

It is currently 31 Aug 2015, 07:30
GMAT Club Tests

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

noel's quizz

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
Manager
Manager
User avatar
Joined: 09 Jun 2003
Posts: 188
Location: work chair
Followers: 2

Kudos [?]: 12 [0], given: 0

noel's quizz [#permalink] New post 19 Aug 2003, 03:46
This topic is locked. If you want to discuss this question please re-post it in the respective forum.

hello, guys

this problem comes from noel's site - http://www.geocities.com/gmatcrew/noel.htm (hope, everybody knows that person from bweek-forums).

if x and y are prime, is xy odd?
1. x-y is even
2. x/y is not an integer

i voted for A. obviously, only subtracting prime from prime gives us even (you don't count 2, since it will contradict with statement 1). thus, 1 is suff. statement 2 is not suff., because we don't know either it 2/3 or 3/5 or whatever. since prime 2 is a key here and we are not sure whether it exists or not, statement 2 is not suff. but noel says, i am wrong :shock:

ps. unfortunatelly, it is diagnostic test and noel does not give any right answer. he just agrees with you, if you are right ('ok') or puts question mark '?' if you are wrong...
Kaplan Promo CodeKnewton GMAT Discount CodesGMAT Pill GMAT Discount Codes
Director
Director
avatar
Joined: 03 Jul 2003
Posts: 654
Followers: 2

Kudos [?]: 36 [0], given: 0

 [#permalink] New post 19 Aug 2003, 04:16
I also fell for the trap!
What a good question?

My answer is E.

For 1) Assume X=Y=2 ; XY=4 = EVEN
Assume X=3 Y=5 ; XY=15 = ODD
Not Suff.


Keep posting questions like this.

I hope, we won't make such a mistakes in the real exam!
Manager
Manager
User avatar
Joined: 24 Jun 2003
Posts: 146
Location: India
Followers: 1

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

Re: noel's quizz [#permalink] New post 19 Aug 2003, 07:43
surat wrote:
hello, guys

this problem comes from noel's site - http://www.geocities.com/gmatcrew/noel.htm (hope, everybody knows that person from bweek-forums).

if x and y are prime, is xy odd?
1. x-y is even
2. x/y is not an integer

i voted for A. obviously, only subtracting prime from prime gives us even (you don't count 2, since it will contradict with statement 1). thus, 1 is suff. statement 2 is not suff., because we don't know either it 2/3 or 3/5 or whatever. since prime 2 is a key here and we are not sure whether it exists or not, statement 2 is not suff. but noel says, i am wrong :shock:

ps. unfortunatelly, it is diagnostic test and noel does not give any right answer. he just agrees with you, if you are right ('ok') or puts question mark '?' if you are wrong...



I'll go with E

(1) gives us that x and y are either both odd, or x=y
If its the former, then x*y is odd. But if its the latter, then we cannot say since x=y=2 gives x*y=even

(2) is trivial since x is prime and does not help us answer the problem

Therefore, E

Now
Re: noel's quizz   [#permalink] 19 Aug 2003, 07:43
Display posts from previous: Sort by

noel's quizz

  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®.