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10 Sep 2010, 11:04
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D
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
(N/A)
Question Stats:
50% (01:51) correct
50%
(01:30)
wrong
based on 2
sessions
History
Date
Time
Result
Not Attempted Yet
Hi everyone!
First of all, I would like to say that it's my first post ont he website! However I am registered to the gmatclub for 3 or 4 months now. Oh and also, I am french (that might explain some english mistake I could do ....)
I have 2 questions:
1) gmat quantitative review 2nd edition question 156 (PS)
"If 4 2
III. -(x+5) >0"
Answer :
First of all let's simplify the expression. We obtain : x 2 means that x is in [ -inf; -5] U [-1; +inf]. i.e we don't only have x < -5 which would mean that it is not true (I think).
But as you can see it coming, the answer is that the statement is TRUE. WHY ?????????
I hope I made myself as clear as possible on this question....
2) As I am very studuous, I am working with the three gmat books and the gmatclub tests.
For all the questions of the "gmat quantitative 2nd edition" I got 272/300, i.e. 90.6% (and I am working on a train) which does not seem that bad.
However for the gmatclub test, I am often less than 50% (percentile) and around 9/10 mistakes. My best score is 75%. So as soon as I start doing the gmatclub tests I am feeling really bad, like if I was hopeless....
Is this range normal? Am I hopeless? Could you give me some advice? I am trying to follow some guide posted on the gmat forum as hard as possible but even if I can see some improvements I just reduce my mistakes from 12 to 8 when.
Thank you in advance if you can answer my questions,
Alex
First of all, I would like to say that it's my first post ont he website! However I am registered to the gmatclub for 3 or 4 months now. Oh and also, I am french (that might explain some english mistake I could do ....)
I have 2 questions:
1) gmat quantitative review 2nd edition question 156 (PS)
"If 4 2
III. -(x+5) >0"
Answer :
First of all let's simplify the expression. We obtain : x 2 means that x is in [ -inf; -5] U [-1; +inf]. i.e we don't only have x < -5 which would mean that it is not true (I think).
But as you can see it coming, the answer is that the statement is TRUE. WHY ?????????
I hope I made myself as clear as possible on this question....
2) As I am very studuous, I am working with the three gmat books and the gmatclub tests.
For all the questions of the "gmat quantitative 2nd edition" I got 272/300, i.e. 90.6% (and I am working on a train) which does not seem that bad.
However for the gmatclub test, I am often less than 50% (percentile) and around 9/10 mistakes. My best score is 75%. So as soon as I start doing the gmatclub tests I am feeling really bad, like if I was hopeless....
Is this range normal? Am I hopeless? Could you give me some advice? I am trying to follow some guide posted on the gmat forum as hard as possible but even if I can see some improvements I just reduce my mistakes from 12 to 8 when.
Thank you in advance if you can answer my questions,
Alex
Archived Topic
Hi there,
This topic has been closed and archived due to inactivity or violation of community quality standards. No more replies are possible here.
Where to now? Join ongoing discussions on thousands of quality questions in our Problem Solving (PS) Forum
Still interested in this question? Check out the "Best Topics" block below for a better discussion on this exact question, as well as several more related questions.
Thank you for understanding, and happy exploring!
10 Sep 2010, 11:26
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alexn49
Hi, and welcome to Gmat Club.
Please post PS questions in the PS subforum: gmat-problem-solving-ps-140/
Please post DS questions in the DS subforum: gmat-data-sufficiency-ds-141/
Pleas post general math questions in the GMAT Math Questions and Intellectual Discussions subforum: gmat-math-questions-and-intellectual-discussions-7/
I split your post. Second part of your question is at: ps-questions-and-question-about-the-gmat-books-100808.html#p779132
As for your PS question:
If \(4< \frac{(7-x)}{3}\), which of the following must be true?
I. 5 < x
II. |x+3| > 2
III. -(x+5) >0"
\(4< \frac{(7-x)}{3}\) --> \(x<-5\). This info is given to be TRUE.
The question is: which of the following statements MUST be true, taking into the consideration that \(x<-5\).
I. \(5 < x\) --> never true;
III. \(-(x+5) >0\) --> \(x<-5\) always true;
As for II. \(|x+3|>2\): you correctly found the ranges of \(x\) for which this inequality holds true: \(x<-5\) or \(x>-1\). So if \(x<-5\) or \(x>-1\) then this inequality holds true. Now, we are told in the stem that \(x<-5\), so this inequality holds true. Or in another words: \(x\) could be for example: -6, -7, -10, -11.5, ... ANY such \(x\), which is less than -5, will satisfy \(|x+3|>2\).
Answer: II and III.
Hope it's clear.
10 Sep 2010, 11:39
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Bookmarks
Thanks for the quick answer! I thought the statement had to be true over the whole set! Good to know!
And thanks for splitting my subject, sorry for the inconvenience
And thanks for splitting my subject, sorry for the inconvenience
