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

It is currently 09 Feb 2016, 09:12
GMAT Club Tests

EXPECTING SOON:

Wharton R2 Interview Invites  |  Join Chat Room for Live Updates


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

Number properties Q7

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
Intern
Intern
avatar
Joined: 07 Oct 2009
Posts: 33
Followers: 0

Kudos [?]: 5 [0], given: 1

Number properties Q7 [#permalink] New post 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.

Please help me understand the best way to solve this one.
Expert Post
Verbal Forum Moderator
Verbal Forum Moderator
User avatar
Joined: 02 Aug 2009
Posts: 2036
Followers: 77

Kudos [?]: 934 [0], given: 37

Re: Number properties Q7 [#permalink] New post 02 Jan 2010, 07:28
Expert's post
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...
_________________

BACK IN CLUB AFTER A GAP OF 6 YEARS

http://gmatclub.com/forum/absolute-modulus-a-better-understanding-210849.html#p1622372
Errors in CR ---- http://gmatclub.com/forum/gmat-institutes-please-review-the-following-qs-211573.html

Re: Number properties Q7   [#permalink] 02 Jan 2010, 07:28
    Similar topics Author Replies Last post
Similar
Topics:
2 Experts publish their posts in the topic Number Properties amitanand 4 21 Jan 2010, 13:03
Number Properties amitanand 2 16 Jan 2010, 02:03
1 Experts publish their posts in the topic Number properties Q9 rajkar001 2 02 Jan 2010, 07:25
Experts publish their posts in the topic Number properties Q10 rajkar001 2 02 Jan 2010, 05:27
General strategy for Number Properties Test bipolarbear 1 04 Aug 2009, 14:23
Display posts from previous: Sort by

Number properties Q7

  Question banks Downloads My Bookmarks Reviews Important topics  

Moderators: Bunuel, WoundedTiger



GMAT Club MBA Forum Home| About| 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®.