Is the integer n odd? 1. n is divisible by 3 2. 2n is : Quant Question Archive [LOCKED]
Check GMAT Club Decision Tracker for the Latest School Decision Releases http://gmatclub.com/AppTrack

 It is currently 21 Jan 2017, 07:27

### 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

# Is the integer n odd? 1. n is divisible by 3 2. 2n is

 post reply Question banks Downloads My Bookmarks Reviews Important topics
Author Message
Manager
Joined: 15 Aug 2006
Posts: 54
Followers: 1

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

Is the integer n odd? 1. n is divisible by 3 2. 2n is [#permalink]

### Show Tags

25 Nov 2006, 18:41
This topic is locked. If you want to discuss this question please re-post it in the respective forum.

Is the integer n odd?

1. n is divisible by 3
2. 2n is divisible by twice as many positive integers as n
VP
Joined: 28 Mar 2006
Posts: 1381
Followers: 2

Kudos [?]: 31 [0], given: 0

### Show Tags

25 Nov 2006, 18:54
I think its B

take numbers

25 1,5,25 are the factors
50 has 1,2,5,10,25,50 as factors

take a number divisible by 3 like 9

9 has 1,3,9 as factors
18 has 1,2,3,6,9,18 as factors

So n neednt be divisible by 3 for and ofcourse n is odd

take any even number and multipley by 2 then this test fails for even number

try 12 and 24
Manager
Joined: 15 Aug 2006
Posts: 54
Followers: 1

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

### Show Tags

25 Nov 2006, 19:17
correct! B is the answer. But I was not able to understand the 2nd question. Can you explain the 2nd question.
Senior Manager
Joined: 01 Sep 2006
Posts: 301
Location: Phoenix, AZ, USA
Followers: 1

Kudos [?]: 26 [0], given: 0

Re: Is the integer n odd? [#permalink]

### Show Tags

25 Nov 2006, 21:08
Is the integer n odd?

1. n is divisible by 3
2. 2n is divisible by twice as many positive integers as n

Using 1

assume n=3 odd
assume n=24 even

insuff

assume n=8 even 2*2*2*2 total 5devisors
2n=16 even 2*2*2*2*2 total 6 devisors

assume n=27 odd 27 is divisible by 3*3*3 = 3^3 which means total 4 devisors
2n=54 is divisible by 2*3*3*3 = 2^1*3^3 emans total 4*2=8 devisors

suff
VP
Joined: 25 Jun 2006
Posts: 1172
Followers: 3

Kudos [?]: 148 [0], given: 0

### Show Tags

26 Nov 2006, 18:16
B 2.

if n is even, then n has a factor of 1 and 2.
and 2n cannot double the factor because 1*2 = 2 is already included n's factor. contradiction. -> n is odd.
26 Nov 2006, 18:16
Display posts from previous: Sort by

# Is the integer n odd? 1. n is divisible by 3 2. 2n is

 post reply Question banks Downloads My Bookmarks Reviews Important topics

 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®.