Check GMAT Club Decision Tracker for the Latest School Decision Releases https://gmatclub.com/AppTrack

 It is currently 28 May 2017, 08:53

### 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

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

# M25 - Q30

Author Message
Current Student
Joined: 12 Nov 2008
Posts: 367
Schools: Ross (R2), Cornell (R3) , UNC (R3) , INSEAD (R1 Jan)
WE 2: FP & Analysis (2 yrs at matriculation)
Followers: 24

Kudos [?]: 106 [0], given: 45

### Show Tags

20 Jul 2009, 12:49
If X and Y are prime integers, what is X+Y ?

1. X-Y is a prime integer.
2. Y<X<6

• Statement (1) ALONE is sufficient, but Statement (2) ALONE is not sufficient
• Statement (2) ALONE is sufficient, but Statement (1) ALONE is not sufficient
• BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient
• EACH statement ALONE is sufficient
• Statements (1) and (2) TOGETHER are NOT sufficient

Statement (1) by itself is insufficient. Consider X=13, Y=11 and X=7 , Y=5
Statement (2) by itself is insufficient. Consider X=5, Y=3 and X=3 , Y=2
Statements (1) and (2) combined are insufficient. Consider X=5, Y=3 and X=5, Y=2

----------

I believe the correct answer is C, since 1 is not a prime number, therefore the only possible pair is 3 and 5.

Thoughts?
Director
Joined: 01 Aug 2008
Posts: 737
Followers: 4

Kudos [?]: 695 [0], given: 99

### Show Tags

20 Jul 2009, 13:15
yes .. I agree, the answer should be C. 5, and 2 fits in ...

only 2, 3, and 5 are primes under 6 so 5, 2 works and 5, 3 works as well.
Senior Manager
Joined: 11 Dec 2008
Posts: 479
Location: United States
GMAT 1: 760 Q49 V44
GPA: 3.9
Followers: 40

Kudos [?]: 208 [0], given: 12

### Show Tags

23 Jul 2009, 13:32
Quote:
Statements (1) and (2) combined are insufficient. Consider X=5, Y=3 and X=5, Y=2

case 1) Y=2, X=5 1) X - Y = 3 is a prime integer and 2) Y<X<6 => X+Y = 7
case 2) Y=3, X=5 1) X - Y = 2 is a prime integer and 2) Y<X<6 => X+Y = 8

Founder
Joined: 04 Dec 2002
Posts: 14961
Location: United States (WA)
GMAT 1: 750 Q49 V42
GPA: 3.5
Followers: 3961

Kudos [?]: 25197 [0], given: 4765

### Show Tags

23 Jul 2009, 13:36
FYI - this is question 29
Discussed here: m25-71385.html

_________________

Founder of GMAT Club

US News Rankings progression - last 10 years in a snapshot - New!
Just starting out with GMAT? Start here...
Need GMAT Book Recommendations? Best GMAT Books

Co-author of the GMAT Club tests

Re: M25 - Q29   [#permalink] 23 Jul 2009, 13:36
Similar topics Replies Last post
Similar
Topics:
M25 Q30: Acid Solution Test 1 06 Feb 2011, 14:21
18 m25 #12 20 04 May 2014, 12:18
18 m25#02 29 28 Nov 2013, 22:20
27 m25 #22 21 07 Jul 2014, 04:13
17 M25 #29 23 12 Jul 2013, 19:51
Display posts from previous: Sort by

# M25 - Q30

Moderator: Bunuel

 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®.