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

 It is currently 23 May 2017, 03:17

### 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

# If n is a positive integer and n2 is divisible by 72, then

Author Message
Manager
Joined: 03 Jul 2007
Posts: 52
Followers: 1

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

If n is a positive integer and n2 is divisible by 72, then [#permalink]

### Show Tags

16 Dec 2007, 10:47
This topic is locked. If you want to discuss this question please re-post it in the respective forum.

If n is a positive integer and n2 is divisible by 72, then the largest positive integer that must divide n is

a, 6
b, 12
c, 24
d, 36
e, 48

Thanks
SVP
Joined: 29 Aug 2007
Posts: 2476
Followers: 69

Kudos [?]: 774 [0], given: 19

### Show Tags

16 Dec 2007, 11:01
pinal2 wrote:
If n is a positive integer and n2 is divisible by 72, then the largest positive integer that must divide n is

a, 6
b, 12
c, 24
d, 36
e, 48

Thanks

not sure whether the question is properly worded:

n^2 = 72k
n^2 = 2 x 2 x 2 x 3 x 3 x k
n = 2x3 sqrt(2k)
has to be a minimum of 2 to be n an integer
so n = 2x3x2 = 12
Manager
Joined: 03 Jul 2007
Posts: 52
Followers: 1

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

### Show Tags

16 Dec 2007, 15:46
You are correct. I apologize. the n2 should be n^2.

16 Dec 2007, 15:46
Display posts from previous: Sort by