Search found 6 matches
I think the answer is B.
1) We don't know no. of item in the sequence, so we couldn't calulate the fouth item.
Insufficient
2) The sum of the first two numbers is 22,
10+12=22
the forth item is 16
Sufficient
IMO B
- by kic883
Sun May 10, 2009 5:27 am- Forum: Data Sufficiency
- Topic: number
- Replies: 4
- Views: 1352
The question ask what is r when (n^2-1^2)/24 (n^2-1^2)/24 = (n^2 - 1)/24 1) 2 not a factor of n if n = 9 (n^2-1^2)/24 = (81-1)/24 r = 9 if n = 11 (n^2-1^2)/24 = (121-1)/24 r = 1 2 different value of r, so not sufficient 2) same as 1) you will find different value of r not sufficient 1) + 2) If n is ...
- by kic883
Sat May 09, 2009 9:43 pm- Forum: Data Sufficiency
- Topic: integer
- Replies: 5
- Views: 1395
Re: Looks easy but OA puzzles me...
My answer is B as well.cramya wrote:If n is a positive integer is n equal to 100?
(1)sqrt(n) >9
(2) sqrt(n)>11
[spoiler]OA : Given as E[/spoiler]
I would go with B and may be I am having a brain freeze.....
Source: Another gmat forum
Something wrong with the OA ?
- by kic883
Sat May 09, 2009 9:30 pm- Forum: Data Sufficiency
- Topic: Looks easy but OA puzzles me...
- Replies: 10
- Views: 1788
I got the same answer. agree with Addoonie wrote:If the answer is A, then this is how i got it...
Find slope of line L
y1-y2/x1-x2
2-0/0-(-3) = 2/3
Parallel line has same slope, so find equation with same slope..
A. 3y-2x = 0
3y=2x
y=(2/3)x
- by kic883
Sat May 09, 2009 8:38 am- Forum: Problem Solving
- Topic: Help on a Coordiate geometry problem
- Replies: 4
- Views: 3156
I think there is something missing of the graph.
Is angle "B" a right angle ?
If B is a right angle, we can find AB = sqrt(3),
detail please check here http://www.platinumgmat.com/gmat_study_ ... an_theorem
BC = 1
AB = sqrt(3)
BC * AB * 1/2 = sqrt(3)/2
- by kic883
Sat May 09, 2009 6:44 am- Forum: Problem Solving
- Topic: triangles and circles.... the worst...
- Replies: 6
- Views: 1941
- by kic883
Wed Apr 29, 2009 7:03 pm- Forum: Data Sufficiency
- Topic: GMAT Prep DS question need help
- Replies: 1
- Views: 913