Number properties Q7 : Retired Discussions [Locked]
Check GMAT Club App Tracker for the Latest School Decision Releases http://gmatclub.com/AppTrack

 It is currently 07 Dec 2016, 12:37

# Chicago-Booth

### 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

# Number properties Q7

Author Message
Intern
Joined: 07 Oct 2009
Posts: 33
Followers: 0

Kudos [?]: 7 [0], given: 1

### Show Tags

02 Jan 2010, 07:15
If N is a positive integer, what is the last digit of 4N ?

1 ( N^2)is divisible by 4
2 N+2 is divisible by 6
(A)Statement (1) ALONE is sufficient, but Statement (2) ALONE is not sufficient
(B)Statement (2) ALONE is sufficient, but Statement (1) ALONE is not sufficient
(C)BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient
(D)EACH statement ALONE is sufficient
(E)Statements (1) and (2) TOGETHER are NOT sufficient.

Verbal Forum Moderator
Joined: 02 Aug 2009
Posts: 4136
Followers: 306

Kudos [?]: 3245 [0], given: 100

### Show Tags

02 Jan 2010, 07:28
ans E...
way is to substitute value and still do it fast..
i) n^2 divisible by 4....n can be any even int so last digit of 4n can be (4*2=8),(4*4=16),(4*6=24) so last digit can be 8,6,4,2etc not suff.
ii)n+2 is divisible by 6... n can be 4,10,16... so last digit can be 6,0,4... not suff..
combined more than value common so not suff...
_________________

Absolute modulus :http://gmatclub.com/forum/absolute-modulus-a-better-understanding-210849.html#p1622372
Combination of similar and dissimilar things : http://gmatclub.com/forum/topic215915.html

Re: Number properties Q7   [#permalink] 02 Jan 2010, 07:28
Similar topics Replies Last post
Similar
Topics:
2 Number Properties 4 21 Jan 2010, 13:03
Number Properties 2 16 Jan 2010, 02:03
1 Number properties Q9 2 02 Jan 2010, 07:25
Number properties Q10 2 02 Jan 2010, 05:27
General strategy for Number Properties Test 1 04 Aug 2009, 14:23
Display posts from previous: Sort by

# Number properties Q7

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®.