GMAT Problem Solving (PS) | Re: If |a+b|=|a-b|, then a*b must be equal to:
SergeNew wrote:If |a+b|=|a-b|, then a*b must be equal to:A. 1B. -1C. 0D. 2E. -2 Think the equation without "a". We know that -b and +b are equal in magnitude. We are adding "a" to each. That still...
View ArticleGMAT Problem Solving (PS) | Re: The mean of (54,820)^2 and (54,822)^2 =
Let 54820 = xEquations reduces to {x^2 + (x+2)^2}/2 = (x^2 + x^2 + 4x + 4)/2 = x^2+2x+2 = x^2 + 2x + 1 + 1 = (X+1)^2 + 1 = 54821^2 + 1
View ArticleGMAT Data Sufficiency (DS) | Re: Is |x| + |y| = 0?
nades09 wrote:Is |x| + |y| = 0?(1) x + 2|y| = 0 (2) y + 2|x| = 0 Since the Question stem is asking if sum of 2 absolute values (which are positive) equal to 0. We know that sum of 2 positive nos can...
View ArticleGMAT Problem Solving (PS) | Re: For any non-zero a and b that satisfy |ab| =...
gmatfrenzy750 wrote:For any non-zero a and b that satisfy |ab| = ab and |a| = -a, |b-4| + |ab-b| = A. ab-4B. 2b-ab-4C. ab+4D. ab-2b+4E. 4-ab 1.We need to find whether ab and b are -ve or +ve2. Since...
View ArticleGMAT Club Tests | Re: M25 Q19
If you quickly sketch out the outer boundaries of this equation you quickliy notice that you have a square bounded by (5,5), (-5,5), (-5,-5) and (5,-5). Additionally you also have the points (10,0),...
View ArticleGMAT Data Sufficiency (DS) | Re: r and t are positive integers, is rt even?...
Statement 1 is A+B = odd >> so one has to be even the other odd >> sufficient!2 R^T= oddTake examples3^2 = 9 >> 3*2 = 6 Answer is yes3^1 = 1 >> 3*1 = 3 Answer is noInsufficient!
View ArticleGMAT Data Sufficiency (DS) | Re: At a two candidate election for mayor, 3/4...
fozzzy wrote:is this a venn diagram question / double matrix? If it is how would set up the table? No it is not, because we do not have overlapping sets. We cannot have a voter who cast the ballot for...
View ArticleGMAT Quantitative Section | Re: Increasing score to Q50?
Aho92 wrote:Hi everyone!GMAT is a week and a half away. Getting Q47 in mock GMAT's. How can I increase this to Q50?Any advice is appreciated.Check here:...
View ArticleGMAT Quantitative Section | Re: Help with Quant!
Aho92 wrote:So I gave my second GMATprep practice exam and scored Q47. Given how weak in Math I am , at first glance, I was pretty pleased. I've worked diligently on my Math for the last 3 weeks. Then...
View ArticleGMAT Data Sufficiency (DS) | Re: If x(x - 5)(x + 2) = 0, is x negative?
For the given equation to be equal to 0 x must either equal 0, 5 or -2. Statement 1: Tells us that x cannot equal 0 or 7. But it could equal 5 or -2. Not sufficientStatement 2: Tells us that x cannot...
View ArticleGMAT Data Sufficiency (DS) | Re: If v and w are different integers, does v=0?...
Statement 1: Can be rewritten as v(w-v) = 0. Since v and w are not the same v must = 0. Sufficient. Statement 2: Doesn't tell us anything about v. Answer: A
View ArticleGMAT Problem Solving (PS) | Re: When divided by 5, x has a remainder of 2 and...
Zarrolou wrote:When divided by 5, x has a remainder of 2 and y has a remainder of 1. Which of the following could be the remainder when x + y is divided by 10?A. 6B. 7C. 8D. 9E. 0 given x-2 is...
View ArticleGMAT Problem Solving (PS) | Re: NEW SET of good PS(3)
akijuneja wrote:Bunuel wrote:5. Mrs. Smith has been given film vouchers. Each voucher allows the holder to see a film without charge. She decides to distribute them among her four nephews so that each...
View ArticleGMAT Problem Solving (PS) | Re: A lighting store is stocked with 410...
Thank you very much Bunuel!!!
View ArticleGMAT Data Sufficiency (DS) | What is the value of a single digit number a?if...
What is the value of a single-digit number a, if this number a is obtained by subtracting a two-digit number wx from another two digit number yz.(1) Unit's digit of wx is same as unit's digit of 3^(18)...
View ArticleIntegrated Reasoning (IR) | Re: How much time is needed to do well in IR?
Baracuda123 wrote:I am scoring 48-49 in quant and 40+ in verbal section on the GMAT Prep test. I want to schedule the exam but I haven't started studying for IR section. So my question is, how much...
View ArticleGMAT Problem Solving (PS) | Re: In racing over a given distance d at uniform...
Think it into a other way.1) When A completes, B is 20 Behind and C is 28 Behind. C is 8 behind B.2) When B completes, C is 10 Behind.What it refers is that in last 20 yards B has gained 2 yards, which...
View ArticleGMAT Problem Solving (PS) | Re: For a particular company, the profit P...
Bunuel wrote:P = 128 + (-\frac{Q^2}{4} + 4Q - 16)^z.P = 128 + (\frac{-Q^2+16Q-64}{4})^zP = 128 + (\frac{-(Q-8)^2}{4})^zP = 128 + (\frac{-(Q-8)^2}{2^2})^zP = 128 + (-(\frac{Q-8}{2})^2)^zP = 128 +...
View ArticleGMAT Data Sufficiency (DS) | Re: If x#0, is |x|/x−1
x^2/|x| < 1(x^2 = |x|*|x|)SO(|x|*|x|)/|x| < 1 Is |x|<1?is x<1 or is x>-1is -1<x<1?(1) x < 1 The issue here is depending on what x is, x may not be in the range of...
View ArticleGMAT Data Sufficiency (DS) | Re: If x≠0, is |x| < 1 ? (1) x^2< 1 (2) |x| < 1/x
If x≠0, is |x| < 1 ?is x<1 ORis -x<1x>-1Is -1<x<1?(1) x^2 < 1x^2<1|x|<1This tells us exactly what the stem looks for.SUFFICIENT(2) |x| < 1/xis x < 1/xORis -x < 1/xis...
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