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# Sorry for post it again, but I really want to clear this

Author Message
Manager
Joined: 08 Oct 2005
Posts: 95
Sorry for post it again, but I really want to clear this [#permalink]

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16 Nov 2005, 12:39
This topic is locked. If you want to discuss this question please re-post it in the respective forum.

Sorry for post it again, but I really want to clear this question.

if n is a positive integer and N^2 is divisible by 72 then the largest positive integer that must divide n is:

a) 6
b) 12
c) 24
d) 36
e) 48
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http://www.gmatclub.com/phpbb/viewtopic.php?t=19170
Director
Joined: 27 Jun 2005
Posts: 504
Location: MS

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16 Nov 2005, 12:59
B 12

ALI1 gave a very good reasoning for this question
http://www.gmatclub.com/phpbb/viewtopic.php?t=19170

12 is the only number which will divide all the values of N, where N^2 is divisible by 72

rest of choices like 24,36,48 can divide only itself .... not the other numbers...where N^2 is divisible by 72
Manager
Joined: 08 Oct 2005
Posts: 95

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19 Nov 2005, 10:01
Okey,,, I got it.
"cool_jonny009" thank you....
19 Nov 2005, 10:01
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