5-Day Free Trial
5-day free, full-access trial TTP
Available with Beat the GMAT members only code
MORE DETAILS
gmat prep num props
This topic has expert replies
-
mav800rick
- Senior | Next Rank: 100 Posts
- Posts: 30
- Joined: Sun Apr 27, 2008 4:22 pm
1) N =6 or a multiple of 6 so that n^2/36 is Integer
2) 144/n^2...could be 2^2. and 2 not a factor of 3.
2) 144/n^2...could be 2^2. and 2 not a factor of 3.
-
MBALA2009
- Junior | Next Rank: 30 Posts
- Posts: 18
- Joined: Wed May 07, 2008 12:08 pm
- Location: Toronto, Canada
(1) number must be a multiple of 36 to be an integer ie 72, 108 etc. and all multiples are also divisible by 3. SUFFICIENT
(2) there are many numbers which can divide into 144 to create an integer ie 2, 4, 6. some of these number are divisible by 3, but other are not. INSUFFICIENT.
(2) there are many numbers which can divide into 144 to create an integer ie 2, 4, 6. some of these number are divisible by 3, but other are not. INSUFFICIENT.
