Search found 132 matches
Re: PS question on GMAT PREP Practice Test 2
For some reason, this question isn't clicking for me. It must be super easy, but I'm just not seeing my error. Is x^4 + y^4 > z^4? (1) x^2 + y^2 > z^2 (2) x + y > z I understand that (2) is insufficient because x and y could be negative numbers, but why isn't (1) sufficient? This Q is anything but ...
- by atlantic
Thu Jun 26, 2008 11:06 pm- Forum: Problem Solving
- Topic: PS question on GMAT PREP Practice Test 2
- Replies: 1
- Views: 1234
- by atlantic
Thu Jun 26, 2008 11:02 pm- Forum: Problem Solving
- Topic: gprep question
- Replies: 1
- Views: 1169
Hi vavish, From 248 people, 156 are married. So if no other status is allowed, the remaining 92 are not married. From the 156 married people, 25% are self employed, meaning 39p. If in total there are 70p self employed, in the 92 not married people should exist 70-39=31p. So there are 31p not married...
- by atlantic
Thu Jun 26, 2008 10:58 pm- Forum: Problem Solving
- Topic: gmat prep q
- Replies: 1
- Views: 1305
Of course lvincy. My mistake.
B says that modX cannot less than 1, so in fact it answers tha question.
Answer is D.
- by atlantic
Wed Jun 25, 2008 1:04 pm- Forum: Data Sufficiency
- Topic: modular arithmetic
- Replies: 3
- Views: 2078
- by atlantic
Wed Jun 25, 2008 1:00 pm- Forum: Problem Solving
- Topic: numbers
- Replies: 4
- Views: 1721
- by atlantic
Wed Jun 25, 2008 10:53 am- Forum: Data Sufficiency
- Topic: coordinate geometry
- Replies: 3
- Views: 1546
Vavish, This is a factoring problem. You can see that the points on the beads are prime factors. So try do prime factor 147,000. That can be 7*7*3*5*2*2*2......., in fact you can forget about the numbers to the right of ',' because those will not give any '7'. Notice that the product of the first th...
- by atlantic
Wed Jun 25, 2008 10:29 am- Forum: Problem Solving
- Topic: beads question
- Replies: 4
- Views: 1272
Hi Ildude02,
(1) obviously SUFF
(2) x < 1/x or -x < 1/x
The first equation says that x^2<1 which the same as (1).
The second says that -x^2 < 1 <x> -1 which can be any value since x^2 is always greater than -1. So (2) alone is INSUFF
Answer A.
- by atlantic
Wed Jun 25, 2008 10:13 am- Forum: Data Sufficiency
- Topic: modular arithmetic
- Replies: 3
- Views: 2078
Vavish,
This time I'm not sure but here it goes.....
44 diagonals means 22 polygon sides.
22polygon sides * 90º = 1,980
My pick would be E.
Can you post OA? TIA
- by atlantic
Wed Jun 25, 2008 10:06 am- Forum: Problem Solving
- Topic: polygon
- Replies: 6
- Views: 3185
Vavish, I believe that the text is not correctly transcript. Although, according to was is written the answer is C. Lets see how..... From 1,2,3,.....,10 you have to chose a serie of five that gives the greater possible mean but the least median and that can only be... {1,2,3,9,10}, why? because it ...
- by atlantic
Wed Jun 25, 2008 9:58 am- Forum: Problem Solving
- Topic: numbers
- Replies: 4
- Views: 1721
Hi all, Well, y=x+1 is a line. So y>x+1 defines a region above that line. If you draw the square region and the line you gonna see that the line intersects the Y axis in y=1 and the square top line in the point (1,2) forming a triangle of side 1. So the probability is the area of the triangle divide...
- by atlantic
Wed Jun 25, 2008 9:51 am- Forum: Problem Solving
- Topic: a good questions
- Replies: 7
- Views: 1714
Hi Vavish, M - total number of male employees F - total number of female employees Mm - number of male employees with master degree Fm - number of female employees with master degree From the statement we know that (1) M=2F <-> F=1/2M (2) Mm=Fm (3) Mm+Fm=1/5(M+F) Then Mm+Fm=1/5(M+F) <-> 2Mm=1/5(M+1/...
- by atlantic
Wed Jun 25, 2008 9:40 am- Forum: Problem Solving
- Topic: probab
- Replies: 3
- Views: 1590
IMO C.
supports for dairy products -> dairy products more expensive -> spend a greater portion of their food budgets on dairy products
So, if there were no supports the families budget would be enough to buy other types of foods.
- by atlantic
Tue Jun 24, 2008 7:41 am- Forum: Critical Reasoning
- Topic: PR- Unable to reason the solution..
- Replies: 5
- Views: 2124
B for me.
Between B and C, C does not clearly reffer to what has worked well in the past.
A is almost unreadable.
D and E contain 'being' that has been banned from the GMAT world and none of them clearly states the idea.
- by atlantic
Tue Jun 24, 2008 7:21 am- Forum: Sentence Correction
- Topic: Heavy commitment
- Replies: 15
- Views: 11242
If M and N are in the correct positions on the table I say that answer is E.
Are there any more numerical values in the table or only variables?
- by atlantic
Tue Jun 24, 2008 6:36 am- Forum: Data Sufficiency
- Topic: addition table
- Replies: 4
- Views: 7253