Search found 132 matches
Oops! I'll go with E also.
But since I also got it by trial and error I doubt was is the final answer, C or D.
Anyone else?
- by atlantic
Tue Jul 01, 2008 12:55 am- Forum: Data Sufficiency
- Topic: Power prep divisibility
- Replies: 5
- Views: 1786
anjaligeorge1,
I believe that some parenthesis are missing in the solutions.
Answer is A. I'll post explanation after I know the correct expression for the solutions.
- by atlantic
Tue Jul 01, 2008 12:45 am- Forum: Problem Solving
- Topic: time speed n distance...pls help
- Replies: 4
- Views: 2605
- by atlantic
Tue Jul 01, 2008 12:20 am- Forum: Problem Solving
- Topic: triangle
- Replies: 3
- Views: 1213
1st year = 4'+x
2nd year=4'+2x
3rd year=4'+3x
4th year=4'+4x
5th year=4'+5x
6th year=4'+6x
Being 'x' the annual increase.
Algebrically the statement says 6/5*(4+4x)=4+6x
Solve it and find that x=2/3.
- by atlantic
Tue Jul 01, 2008 12:18 am- Forum: Problem Solving
- Topic: When a certain tree
- Replies: 1
- Views: 1447
What is the median? The median is the midle number. (remind that median is not the mean)
Since this serie has 73 entrees, the median is the entree nr. 37.
Entree nr. 37 is on the interval 80-89. Just count the entrees until you find where is nr.37
- by atlantic
Tue Jul 01, 2008 12:11 am- Forum: Problem Solving
- Topic: Gprep - median
- Replies: 1
- Views: 1262
A. f(a+b)=a^2+2ab+b^2 f(a)=a^2 f(b)=b^2 so f(a+b) no equal to f(a) + f(b) B. f(a+b)=a+b+1 f(a)=a+1 f(b)=b+1 so f(a+b) no equal to f(a) + f(b) C. f(a+b)=sqrt(a+b) f(a)=sqrt(a) f(b)=sqrt(b) so f(a+b) no equal to f(a) + f(b) D. f(a+b)=2/(a+b) f(a)=2/a f(b)=2/b So f(a+b) no equal to f(a) + f(b) E. f(a+b...
- by atlantic
Tue Jul 01, 2008 12:04 am- Forum: Problem Solving
- Topic: gprep - functions
- Replies: 1
- Views: 1228
C for me too.
'too long for the eye to register' is not wordy, it's clear and concise, besides looks better than 'too long to be registered by the eye'
- by atlantic
Mon Jun 30, 2008 9:48 am- Forum: Sentence Correction
- Topic: human eye...
- Replies: 6
- Views: 2809
such a sad story, isn't it?
IMO C is the answer. I could not read it more than once because my vision is distorted by tears.
- by atlantic
Mon Jun 30, 2008 9:06 am- Forum: Critical Reasoning
- Topic: Insurance
- Replies: 9
- Views: 3107
younggun044, You have to fix Joey in all the possible positions and calculate the possible arrangements for the remaining people. 1st: Joey is on the first position Therefore no matter what is the position of Frankie he'll be behind Joey. Since Joey is fixed, the remaining five have 5! ways of being...
- by atlantic
Mon Jun 30, 2008 5:38 am- Forum: Problem Solving
- Topic: permutation and combination
- Replies: 7
- Views: 1610
- by atlantic
Mon Jun 30, 2008 3:46 am- Forum: Data Sufficiency
- Topic: GMAT Prep
- Replies: 2
- Views: 2603
Yep erjamit, you got it. Answer is A.
For you it was a piece of cake. Great. I got it wrong, my answer was D.
Thanks.
- by atlantic
Sun Jun 29, 2008 11:46 am- Forum: Data Sufficiency
- Topic: GMAT Prep 700's level
- Replies: 5
- Views: 1911
Hi mlane, Everytime that you see inequalities, the best is to plug numbers. (1) when x^2, x can be either positive or negative that x^2 is always positive, and that is the same that happens in mod(x), a negative number returns positive and a positive remains positive. Exactly what is said in this op...
- by atlantic
Sun Jun 29, 2008 10:56 am- Forum: Data Sufficiency
- Topic: GMAT prep DS question
- Replies: 5
- Views: 1927
Hi mlane, The graph intersects the X axis when y=0. So (x+a)(x+b)=0 <-> x=-a or x=-b (1) says that a+b=-1; there are multiple choices for a em b, INSUFF (2) the graph intersects the Y axis in (0,-6). Any graph intersects the Y axis when x=0 so a*b=-6, again there are multiple choices for a anb b. (1...
- by atlantic
Sun Jun 29, 2008 10:45 am- Forum: Data Sufficiency
- Topic: GMAT prep DS question
- Replies: 2
- Views: 1441
- by atlantic
Sun Jun 29, 2008 10:18 am- Forum: Data Sufficiency
- Topic: GMAT Prep
- Replies: 2
- Views: 2603
GMAT Prep 700's level
Hi guys,
Got this one after 12 correct in a row. It was my question nr. 20 and I believe this one belongs to the 700's level. I got 49 on Quant. in this Prep.
I'll post OA later.
- by atlantic
Sun Jun 29, 2008 10:04 am- Forum: Data Sufficiency
- Topic: GMAT Prep 700's level
- Replies: 5
- Views: 1911