Search found 44 matches
line intersection??
This is a question from MGMAT CAT online My answer was D , but answer provided by MGMAT is A , and here is the explanation: [spoiler]Lines are said to intersect if they share one or more points. In the graph, line segment QR connects points (1, 3) and (2, 2). The slope of a line is the change in y d...
- by ch0719
Sun Jan 04, 2009 10:26 pm- Forum: Data Sufficiency
- Topic: line intersection??
- Replies: 11
- Views: 4495
- by ch0719
Sat Jan 03, 2009 10:07 pm- Forum: Problem Solving
- Topic: Questions with Factors/multiples
- Replies: 4
- Views: 3854
Hmm, the question as it stands couldn't be a GMAT question. To begin, there would have been a proviso that rules out the possibility of the denominator = 0 (e.g., x cannot equal y) Also, the value of this rational expression varies as we plug in different values for x and y such that xy=1. Where di...
- by ch0719
Sat Jan 03, 2009 8:32 pm- Forum: Problem Solving
- Topic: xy=1
- Replies: 10
- Views: 1839
- by ch0719
Sat Jan 03, 2009 7:28 pm- Forum: Problem Solving
- Topic: xy=1
- Replies: 10
- Views: 1839
- by ch0719
Sat Jan 03, 2009 7:26 pm- Forum: Problem Solving
- Topic: xy=1
- Replies: 10
- Views: 1839
thanks
given the statement 1 and 2, we can already conclude that the only possible outcome of x is 1, because x has to be a positive int and it has to be lower than a 2, then it got to be 1 regardless of what the question is asking
therefore i guess the question may be not too legit 
- by ch0719
Sat Jan 03, 2009 7:23 pm- Forum: Data Sufficiency
- Topic: if x^2-x-6<0, what is the value of x?
- Replies: 13
- Views: 2380
xy=1
if xy=1, what is the value of [2(x+y)^2]/[2(x-y)^2]?
2
4
8
16
32
OA is 16
I tried to plug in numbers but that doesn't work
- by ch0719
Sat Jan 03, 2009 7:14 pm- Forum: Problem Solving
- Topic: xy=1
- Replies: 10
- Views: 1839
if x^2-x-6<0, what is the value of x?
if x^2-x-6<0, what is the value of x?
1. x is an positive integer
2. -2<x<2
I found this somewhere on the web, the answer given is A but I thought it should be E, what do you think?
- by ch0719
Sat Jan 03, 2009 3:13 pm- Forum: Data Sufficiency
- Topic: if x^2-x-6<0, what is the value of x?
- Replies: 13
- Views: 2380
wording of questions
I have encountered a supposedly easy question on MGMAT, however the wording puzzled me: If -3x < 6, which of the following must be true? A x < -3 B x < -2 C x > 3 D x > -2 E x > 0 this question can be easily solved by division on both sides, and result is x>-2, which most people would incline to cho...
- by ch0719
Fri Jan 02, 2009 8:41 pm- Forum: Problem Solving
- Topic: wording of questions
- Replies: 1
- Views: 1453
I think the solution is corect. Stmt I For any 2 digit number in which the 2 digits (is unique) since they add up to 11 the remainder is 2 SUFF-> One defnite answer for remainder Stmt II x+7 / 9 = Some integer k x = 9k - 7 Any integer of this form will always leave a remainder of 2 when divided by ...
- by ch0719
Mon Dec 29, 2008 1:31 am- Forum: Data Sufficiency
- Topic: a question from MGMAT CAT online, I think there's a mistake
- Replies: 4
- Views: 1640
a question from MGMAT CAT online, I think there's a mistake
the original question states: If a and b are the digits of the two-digit number X, what is the remainder when X is divided by 9? (1) a + b = 11 (2) X + 7 is divisible by 9 My answer is A and the solution answer is D Here is the solution provided, which I found is inaccurate with the question, for th...
- by ch0719
Sun Dec 28, 2008 6:10 pm- Forum: Data Sufficiency
- Topic: a question from MGMAT CAT online, I think there's a mistake
- Replies: 4
- Views: 1640
The question I post is sent to me by a friend who got it from a gmat prep company in China, which I have heard that they might have used real gmat questions, but this is not for sure. Just to be cautious and to not stir any controversial matter in this forum I have edited my reply regarding the sour...
- by ch0719
Thu Dec 25, 2008 2:16 am- Forum: Data Sufficiency
- Topic: mean, median and mode
- Replies: 14
- Views: 7818
National Science Foundation
According to the National Science Foundation, in 2003 there were 198,113 female science and engineering graduate students, almost 42% of the graduate students in those fields, twice as much as 1981. A twice as much as 1981 B twice as many as 1981 C double the figure for 1981 D double what it was in ...
- by ch0719
Wed Dec 24, 2008 11:08 pm- Forum: Sentence Correction
- Topic: National Science Foundation
- Replies: 2
- Views: 4637
National Science Foundation
According to the National Science Foundation, in 2003 there were 198,113 female science and engineering graduate students, almost 42% of the graduate students in those fields, twice as much as 1981. A twice as much as 1981 B twice as many as 1981 C double the figure for 1981 D double what it was in ...
- by ch0719
Wed Dec 24, 2008 11:08 pm- Forum: Sentence Correction
- Topic: National Science Foundation
- Replies: 1
- Views: 1309
I don't think
would work...1 X X X
2 3 X 8
it prob will take 5 min to solve this question if no other easier way to do it
if I see this kind of question on the real GMAT I will know I am doing well
lol...
- by ch0719
Wed Dec 24, 2008 10:39 pm- Forum: Problem Solving
- Topic: eight women in two rows...
- Replies: 8
- Views: 1711