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General GMAT Questions and Strategies | Re: 15 GMAT Practice Tests with...
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View ArticleData Sufficiency (DS) | If x + y = 7, what is the value of xy(x – y)?
If x + y = 7, what is the value of xy(x – y)? (1) 4xy = 7(x + y)(2) x^2 = y^2
View ArticleData Sufficiency (DS) | If a, b, and c are positive integers, is b = ac^(-1/2)
If a, b, and c are positive integers, is \(b = \frac{a}{c}\)?(1) \(c = \frac{a^2}{b^2}\)(2) \(\sqrt{c} = \frac{b}{a}\)
View ArticleSaid | Re: Oxford Profile Evaluation
Rahul30 wrote:Hi Can anyone please check my profile for SAIDNationality- Indian Gender- MaleXth- 67.7% XIIth - 65%Undergrad- B.E. in Electronics and Telecommunications Engineering with 54.4%TOEFL- Yet...
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Data Sufficiency (DS) | The leftmost tick mark is 1, and successive tick...
The leftmost tick mark is 1, and successive tick marks shown on the number line above are equally spaced. If x and y are the numbers designating the end points of intervals as shown, what is the value...
View ArticleData Sufficiency (DS) | If xy = 7, what is xy(x + y)^2 ?
If xy = 7, what is xy(x + y)^2 ?(1) x^2 + y^2 = 50(2) x^2 = 1
View ArticleData Sufficiency (DS) | If xy = z, what is the value of x ? (1) y = 2z (2) z...
If xy = z, what is the value of x ? (1) y = 2z (2) z < -1
View ArticleProblem Solving (PS) | Re: If 3^x>10, which of the following must be true?
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View ArticleData Sufficiency (DS) | Re: If xy = 7, what is xy(x + y)^2 ?
If xy = 7, what is xy(x + y)^2 ?(1) x^2 + y^2 = 50(2) x^2 = 1xy(x + y)^2= xy(x^2 + y^2 + 2xy)Statement 1: given x^2 + y^2 = 50.Substitute given values to get the answer.Sufficient.Statement 2: x^2 =...
View ArticleProblem Solving (PS) | If 4y^4 − 41y^2 + 100 = 0, then what is the sum of the...
Cheatyface method (for people too lazy to factor):Divide through by\(4\) to obtain\(y^4 − \frac{41}{4}y^2 + 25 = 0\) .Substitute\(A = y^2\) to obtain\(A^2 − \frac{41}{4}A + 25 = 0\) .We know that the...
View ArticleProblem Solving (PS) | If y is the average of x odd consecutive integers and...
vinyasgupta wrote:If y is the average of x odd consecutive integers and |z - 6/4| = 1/2, which of the following MUST be true?I. xy(z + 1) is even.II. x(z + y) is even.III. (x^2 - x)yz is even.(A) I...
View ArticleQuantitative | Re: Overview of GMAT Math Question Types and Patterns on the GMAT
3. (statistics) What is the median value of 5 data?1) The first 3 smallest data are 10, 12, 15.2) The biggest data is 20=>Forget conventional ways of solving math questions. In DS, VA (Variable...
View ArticleData Sufficiency (DS) | Re: Is |x| > 10?
Ans should be A. X =2,10. Hence in both cases value of x is lesser than 10. Hence A is sufficient.If x is less than 10. X can be -1 or 11. Here value of x is less than 10 in one case and more than 10...
View ArticleData Sufficiency (DS) | Re: What is the value of |x - y|?
IMO it's A.Statement 1: rearrange to get the value of (x-y)^2 = 1.Thus, |x-y|= 1.Sufficient.Statement 2: rearranging gives:-x(x-y-1) =0.So, either x= 0. Thus, |x-y| = |y|. No definite value.Or (x-y-1)...
View ArticleData Sufficiency (DS) | If x + y = 7, what is the value of xy(x – y)?
(1) Since, x+y=7, then substituting corrensponding values in the equation 4xy=7(x+y) we getxy=49/4x+y=7solvingy^2-2y+49/4=0solving we see that x=y=7/2 and xy(x-y)=0Sufficient(2)...
View ArticleIntegrated Reasoning (IR) | MSR from GMATprep 6_Global coffee consumption
Linh Nguyen Thi wrote:I was too quite surprised when I could not find much discussion on IR ExamPrep questions.I am having problem with this question. To be honest I am not sure what I am being asked...
View ArticleData Sufficiency (DS) | Re: If r and s are nonzero integers, is r/s an integer ?
We need to discover whether s is a factor of r(1)s-4=(r-2)(r+2)s-4=r^2-4s=r^2s=1; r=1 => r/s=1 YES-integers=4; r=2 r/s= 2/4=1/2 NOInsufficient(2) r^2-s^2= -12This statement tells us that |r|<|s|...
View ArticleProblem Solving (PS) | Re: Customers can use a manufacturer's coupon and a...
Hello from the GMAT Club BumpBot!Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think...
View ArticleProblem Solving (PS) | Re: In the figure, if QS=6 units and PS=8 units, then...
Harikrushna Kotadiya wrote:In the figure, if QS=6 units and PS=8 units, then what is the length of segment SR ?I don't have options. The answer is= 32/3.For a right angles triangle as given in figure...
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