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

It is currently 29 Aug 2014, 02:44

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

An integer greater than 1 that is not prime is called

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
Manager
Manager
avatar
Joined: 19 Nov 2007
Posts: 228
Followers: 1

Kudos [?]: 83 [0], given: 1

GMAT Tests User
An integer greater than 1 that is not prime is called [#permalink] New post 17 Nov 2009, 23:11
00:00
A
B
C
D
E

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 0 sessions
An integer greater than 1 that is not prime is called composite. If the two-digit integer n is greater than 20, is n composite?
(1) The tens digit of n is a factor of the units digit of n.
(2) The tens digit of n is 2.
Manager
Manager
User avatar
Joined: 13 Aug 2009
Posts: 204
Schools: Sloan '14 (S)
Followers: 3

Kudos [?]: 74 [0], given: 16

GMAT Tests User
Re: DSCompostite [#permalink] New post 18 Nov 2009, 00:59
Statement 1:

All numbers between 11 and 19 fit this requirement, but it includes both primes and composites:

Prime: 11, 13, 17, 19
Composite: 12, 14, 15, 16, 18

INSUFFICIENT

Statement 2:

This set includes the numbers between 20 and 29 which also has both primes and composites.

INSUFFICIENT

Statements 1 and 2:

From the numbers between 20 and 29 where the tens digit is a factor of the units digit, we have only composites.

We know this because no even number besides 2 is a prime number:

22,24,26,28

SUFFICIENT

ANSWER: C.
Manager
Manager
User avatar
Joined: 29 Oct 2009
Posts: 211
Followers: 68

Kudos [?]: 599 [0], given: 18

GMAT Tests User
Re: DSCompostite [#permalink] New post 18 Nov 2009, 01:10
Quote:
All numbers between 11 and 19 fit this requirement, but it includes both primes and composites:


Question stem states that n must be greater than 20.

(A) should be sufficient.
_________________

Click below to check out some great tips and tricks to help you deal with problems on Remainders!
compilation-of-tips-and-tricks-to-deal-with-remainders-86714.html#p651942

Word Problems Made Easy!
1) Translating the English to Math : word-problems-made-easy-87346.html
2) 'Work' Problems Made Easy : work-word-problems-made-easy-87357.html
3) 'Distance/Speed/Time' Word Problems Made Easy : distance-speed-time-word-problems-made-easy-87481.html

Senior Manager
Senior Manager
avatar
Joined: 30 Aug 2009
Posts: 290
Location: India
Concentration: General Management
Followers: 2

Kudos [?]: 93 [0], given: 5

GMAT Tests User
Re: DSCompostite [#permalink] New post 18 Nov 2009, 02:12
jade3 wrote:
An integer greater than 1 that is not prime is called composite. If the two-digit integer n is greater than 20, is n composite?
(1) The tens digit of n is a factor of the units digit of n.
(2) The tens digit of n is 2.


A

1. numbers such as 22 24 36 39 suffice and are composite
Suff
2. we know nothing about units digit. the info will be true for 23 and 24 as well. Hence insuff
Re: DSCompostite   [#permalink] 18 Nov 2009, 02:12
    Similar topics Author Replies Last post
Similar
Topics:
An integer greater than 1 that is not prime is called dancinggeometry 13 10 Sep 2008, 00:05
An integer greater than 1 that is not prime is called ritula 10 19 Jun 2008, 23:14
8 Experts publish their posts in the topic An integer greater than 1 that is not prime is called marcodonzelli 9 08 Jan 2008, 05:20
Problem 1 : An integer greater than 1 that is not a prime is briozeal 5 12 Jun 2006, 15:41
An integer greater than 1 that is not a prime is called gmat_crack 11 03 May 2006, 14:41
Display posts from previous: Sort by

An integer greater than 1 that is not prime is called

  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®.