GMAT Data Sufficiency (DS) | Re: What is the value of ab?
Bunuel wrote:What is the value of ab?(1) |a| + b = a. Just plug numbers to see that this statement is NOT sufficient: if a=b=0, then ab=0 but if a=-1 and b=-2, then ab=2. Not sufficient.(2) a + |b| =...
View ArticleGMAT Data Sufficiency (DS) | Re: What is the value of the two-digit number TU
Thanks mdbharadwaj and Bunuel!
View ArticleGMAT Data Sufficiency (DS) | Re: Please help with this Inequality
Zarrolou wrote:tirbah wrote: Zarrolou - Thanks for the wonderful explanation and also for providing the situation when C would be correct. I have a small doubt though - You mentioned m^3-m^2>0 or...
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GMAT Quantitative Section | Tips and Tricks: Mixtures
Hi guys!This is my second post ofTips and Tricks , if you have missed the first one be sure to check it out Inequalities In this one I will show you a method (disclamer: I did not invente it ) to...
View ArticleGMAT Club Tests | Re: m13 q23
Is A positive? 1. x^2 - 2x + A is positive for all x 2. Ax^2 + 1 is positive for all xBasically the question is, when x^2 - 2x + A is positive for all x --> can we say under that prerequisitions...
View ArticleGMAT Problem Solving (PS) | Re: Of the five coordinates associated with...
makes a lot of sense
View ArticleGMAT Problem Solving (PS) | Re: For a certain art exhibit, a museum sold...
it took me 16minutes and i still got it wrong. N it says 9-5:55 so why are we looking at the intervals between 9 and 9 55 only?
View ArticleGMAT Data Sufficiency (DS) | Re: GMAT Prep Question
itsmeabhi99 wrote:Hi Following is a DS question in GMAT PrepIs n > 6?1) Sqrt(n) > 2.52) n > sqrt(37)Would you kindly suggest how can the option 2 be sufficient? Merging similar topics. Please...
View ArticleGMAT Club Tests | Re: M14, 33 (If ab≠0 and |a|
Bunuel wrote:youngkacha wrote:I thought |x| = \sqrt{x^2}? How do you arrive at |a| = a^2?a^2<b^2 is obtained bysquaring |a|<|b| (we can safely square|a|<|b| since both sides of the inequality...
View ArticleGMAT Data Sufficiency (DS) | Re: Is the standard deviation of the numbers X,...
Is the 700-level rating accurate?
View ArticleGMAT Data Sufficiency (DS) | is x negative
is x negative 1) X^3-X^5<0 2) X^2-1 <0while solving stmt 1 X^3(1-X^2)<0X^3(X+1)(1-X)<0Then i took the roots as -1,0,+1 on the number line to find the range as per vertias prep graph...
View ArticleGMAT Quantitative Section | Re: 10 Full Length GMAT Pen&Paper Tests
mukulr wrote:Downloaded the files (*.rar).. but not able to extract got some error message.. asked to insert the disck in drive.. Please upload .zip extension file.TIA the compression ratio of the...
View ArticleGMAT Data Sufficiency (DS) | Re: If a > 0, is 2/(a+b) + 2/(a-b) = 1?
rsworase wrote:I am still confused. Your explanation says Statement 1 LHS is not equal to RHS ...doesn't that mean it is sufficient in saying whether the first statement is enough or not? I too...
View ArticleGMAT Data Sufficiency (DS) | Re: Is N an even number?
derekgmat wrote:Is N an even number?(1) The average of N consecutive integers is zero.(2) The sum of the first N perfect squares 1^2 + 2^2 + .... + N^2 = 55 Question asks Is N = Even ?? Stmt - 1 ::...
View ArticleGMAT Data Sufficiency (DS) | Re: Is the standard deviation of the numbers X,...
hitman5532 wrote:Is the 700-level rating accurate?I would say 650 - 700. Note that there are certain complications:1. The concept of SD is not very intuitive to many people which makes this question...
View ArticleGMAT Problem Solving (PS) | Re: According to the chart shown, which of the...
Walkabout wrote:According to the chart shown, which of the following is closest to the median annual number of shipments of manufactured homes in the United States for the years from 1990 to 2000,...
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GMAT Problem Solving (PS) | Re: Which of the following points is closest to...
If the line is ax+by+c =0 and Point ( x1, y1) Distance = | ax1+ by1 + c | / sqrt( a^2 + b^2 ) Using this formulae one can easily plug in and find out the least distance
View ArticleGMAT Problem Solving (PS) | Re: For which of the following functions is...
Rajkiranmareedu wrote:Why is option C Wrong\sqrt{3(c-d)} = \sqrt{(3c)}-\sqrt{(3d)} Option C says g(x) =\sqrt{3x} So, g(c-d) =\sqrt{c-d} g(c) =\sqrt{c} g(d) =\sqrt{d} We cannot say that\sqrt{c-d}...
View ArticleGMAT Club Tests | Re: m13 q23
teal wrote:why can't we apply the negative discriminant logic in statement 2; the parabola in stat 2 will also not cut x axis ( in all possible values of a, which only defines the slope of parabola)....
View ArticleGMAT Problem Solving (PS) | Re: 6 machines each working @ the same constant...
You can solve this problem without any equations. Just to calculate the rate of 1 machine. The rate of 1 machine is\frac{1}{6*12}=\frac{1}{72} part per day.So, 1 machine in 8 days can...
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