GMAT Problem Solving (PS) | Re: An absent minded scientist walks on an...
T = total no. of steps in escalatorn = speed of escalator in steps per second4 = steps per sec of the scientist (n+4)=T/15 and (4-n) = T/45=> n = 2=> T = 90
View ArticleGMAT Problem Solving (PS) | Re: A lighting store is stocked with 410...
F + T = 410Now, expression for the no. of imported items = 0.05F+0.3T=> 0.05F+0.3(410-F)=123-0.25F=>F has to be a multiple of 4to minimize the expression, we have to maximize FMax value of F can...
View ArticleGMAT Data Sufficiency (DS) | Re: Is the range of the integers 4, 7, x, 6, 5,...
Is the range of the integers 4, 7, x, 6, 5, y greater than 9 ? The range of a set is the difference between the largest and smallest elements of the set.(1) y > x^2. Clearly insufficient. If y=4...
View ArticleGMAT Data Sufficiency (DS) | Re: If set S consists of the numbers w, x, y, z...
If set S consists of the numbers w, x, y, z is the range of numbers in the S greater than 5? (1) The range of any three numbers in the set S is greater than 5. The range of a subset is less than or...
View ArticleGMAT Club Tests | Re: m08-q26
sathiyanarayanan wrote:is it XY or X*Y ?Because X = 1 (odd)Y = 6 (not a multiple of 4 )But XY = 16 ( multiple of 4 ) :/So i guess it should be X*Y ..please clarify .Yes, it's x multiplied by y. If it...
View ArticleGMAT Problem Solving (PS) | Re: Slope Angle
Vini,A line of the form y=mx+b, has a slope 'm'Convert the given equation in this form to get y=-rt3x -6.Since quesn deals in slope you need not calculate intercepts, clearly slope is negative and is...
View ArticleIntegrated Reasoning (IR) | Re: Is there any penalty if I dont complete IR...
essaysnark wrote:We know (from hearing GMAC people discuss it) that you must answer each part of an IR correctly to receive credit for the question. Your score is based on how many questions you answer...
View ArticleGMAT Problem Solving (PS) | Re: A company assigns product codes consisting of...
bagdbmba wrote:A company assigns product codes consisting of all the letters in the alphabet.How many product codes are possible if the company uses at most 3 letters in its codes, and all letters can...
View ArticleGMAT Quantitative Section | Re: Do you ignore complex roots of a cube in DS...
missil3 wrote:I was doing the manhattan CAT and I got a problem wrong because I considered the complex roots of a cube. Do we ignore them for GMAT.GMAT deals with only Real Numbers: Integers, Fractions...
View ArticleGMAT Data Sufficiency (DS) | Re: Is x^2 + y^2 > 3z
Is x^2 + y^2 > 3z (1) (x + y)^2 = 9z and (x - y)^2 = z -->x^2+2xy+y^2=9z andx^2-2xy+y^2=z . Add them up2(x^2+y^2)=10z -->x^2+y^2=5z . Ifx=y=z=0 , thenx^2 + y^2=0=3z and the answer is NO but...
View ArticleGMAT Data Sufficiency (DS) | Re: A certain high school with a total...
Bumping for review and further discussion.
View ArticleGMAT Problem Solving (PS) | Re: Simultaneous equations
I agree with the solution provided here, but I would like to know an alternative way that is easier and can be done in the shortest amount of time possible. The current approach is lengthy and...
View ArticleGMAT Problem Solving (PS) | Re: Fresh Meat!!!
ygdrasil24 wrote:\frac{1}{3} + \frac{1}{9} + \frac{1}{27} + \frac{1}{37}=\frac{333}{999} + \frac{111}{999} + \frac{37}{999} + \frac{27}{999}=\frac{508}{999}=0.508508... .How do we get these fractions...
View ArticleGMAT Problem Solving (PS) | Re: If a square mirror has a 20-inch diagonal,...
fatihaysu wrote:If a square mirror has a 20-inch diagonal, what is the approximate perimeter of the mirror, in inches?(A) 40(B) 60(C) 80(D) 100(E) 120My aprroach is;[Reveal] Spoiler: 20= X...
View ArticleGMAT Problem Solving (PS) | If A(n)=1/(n(n+1)) for all positive integers n,...
So I'm working throu Manhattan GMAT advanced quant book and got stuck on this problem:If A(n)=1/(n(n+1)) for all positive integers n, what is the sum of the first 100 elements of An?The book...
View ArticleGMAT Data Sufficiency (DS) | Re: A number of oranges are to be distributed...
To me it seems a slightly ambiguous question. I agree with Bunuel, no of baskets could be either of 1, 2, 4, 5, 10, 20 and thus no of oranges per basket could be 20, 10, 5, 4, 2, 1 respectively..(1)...
View ArticleGMAT Problem Solving (PS) | Trigonometry
I know the question is not related but still I think gmatclub is the best place to get a solution.How to get a linear combination of sinusoidal function from this (1 + 0.1 cos5t) cos 100t. if anyone...
View ArticleGMAT Quantitative Section | There are 3 teams each with 5 basket players.
There are 3 teams each with 5 basket players. How many combinations are there if we were to pick 2 players from the 3 teams such that no team was picked twice?A) 50B) 23C) 75D) 28E) 45I know the...
View ArticleGMAT Problem Solving (PS) | Re: If f(x)=x^2/b^2 + 2x + 4, then for each...
Bunuel wrote:Revenge2013 wrote:If f(x)=x^2/b^2 + 2x + 4, then for each non-zero value of b the function of f(x) is the least when x equalsA. -1 -\sqrt{(1-4b)}B. -2C. 0D. -b^2E. b-4 Complete...
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