It is currently 22 Feb 2018, 18:40

### 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

# Events & Promotions

###### Events & Promotions in June
Open Detailed Calendar

# If x is an integer is x even? 1. x is equal to the

 post reply Question banks Downloads My Bookmarks Reviews Important topics
Author Message
Director
Joined: 25 Oct 2008
Posts: 591
Location: Kolkata,India
If x is an integer is x even? 1. x is equal to the [#permalink]

### Show Tags

25 Jul 2009, 02:58
00:00

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 0 sessions

### HideShow timer Statistics

This topic is locked. If you want to discuss this question please re-post it in the respective forum.

If x is an integer is x even?
1. x is equal to the difference between two consecutive prime nos.
2. x is greater than 1.

I have a doubt with stmt 1. is'nt it a bit vague?Two consecutive prime nos...only one such set exists i.e 2,3.right?So why is my answer A wrong?
_________________

http://gmatclub.com/forum/countdown-beginshas-ended-85483-40.html#p649902

Director
Joined: 01 Apr 2008
Posts: 872
Name: Ronak Amin
Schools: IIM Lucknow (IPMX) - Class of 2014
Re: integer is x even [#permalink]

### Show Tags

25 Jul 2009, 03:01
tejal777 wrote:
If x is an integer is x even?
1. x is equal to the difference between two consecutive prime nos.
2. x is greater than 1.

I have a doubt with stmt 1. is'nt it a bit vague?Two consecutive prime nos...only one such set exists i.e 2,3.right?So why is my answer A wrong?

What about 11, 13 ? or 17,19?
E should be the answer.
Retired Moderator
Joined: 05 Jul 2006
Posts: 1747
Re: integer is x even [#permalink]

### Show Tags

25 Jul 2009, 03:46
[quote="tejal777"]If x is an integer is x even?
1. x is equal to the difference between two consecutive prime nos.
2. x is greater than 1.

2,3,5,7,11,13..ETC CONSECUTIVE PRIMES

FROM 1

3-2 = 1 .ODD OR 7-5 = 2 ...........INSUFF

FROM 2

INSUFF

BOTH

IF X>1 AND IS THE DIFFERENCE BETWEEN 2 CONSEC PRIMES THEN SURELY IT IS EVEN.....SUFF

C
Director
Joined: 01 Apr 2008
Posts: 872
Name: Ronak Amin
Schools: IIM Lucknow (IPMX) - Class of 2014
Re: integer is x even [#permalink]

### Show Tags

25 Jul 2009, 05:40
If x is an integer is x even?
1. x is equal to the difference between two consecutive prime nos.
2. x is greater than 1.

Oopss...
1) x can be equal to 2 because for some consecutive primes like (3,5), (11,13) the difference is 2 => x is even

x can be equal to any number other than 2 for some consecutive primes like (7,11), (31,17) and this x will also be even ( ODD-ODD = even ).

x can be equal to 1 for one pair of consecutive primes (2,3) and this x is ODD.
INSUFF.

2) x > 1...x can be 2,3,4,...
INSUFF.

Combining,
from 1) can be 1 or any multiple of 2.
from 2) x can be anything greater than 1.
Thus, x CANNOT be 1 but x can be any multiple of 2.

Hence C ..silly silly sigh!!
Re: integer is x even   [#permalink] 25 Jul 2009, 05:40
Display posts from previous: Sort by

# If x is an integer is x even? 1. x is equal to the

 post reply Question banks Downloads My Bookmarks Reviews Important topics

 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®.