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GMAT Data Sufficiency (DS) | Re: Is xy < 1?
stunn3r wrote:Is xy < 1?(1) x + y = 1(2) x^2 + y^2 = 1 Maybe another approach which is a bit visual:F.S 1:Imagine the straight line on the x-y axis : Omitting the x/y intercepts where anyways the...
View ArticleGMAT Problem Solving (PS) | Re: Find the last two digits
sriharimurthy wrote:Quote:Q2.(201*202*203*204*246*247*248*249)^21.362.563.764.16 Similarly for this question,R of (201*202*203*204*246*247*248*249)*(201*202*203*204*246*247*248*249)/100= R of...
View ArticleGMAT Problem Solving (PS) | Re: If 9x=27^y, which of the following expresses...
Bunuel wrote:Bumping for review and further discussion*. Get a kudos point for analternative solution!*New project from GMAT Club!!! CheckHERETheory on Exponents: math-number-theory-88376.htmlAll DS...
View ArticleGMAT Problem Solving (PS) | Re: Each of the integers from 0 to 9, inclusive,...
Bunuel wrote:joynal2u wrote:Each of the integers from 0 to 9, inclusive, is written on separrate slip of blank paper and the ten slips are dropped into a hat. If the slips are then drawn one at a time...
View ArticleGMAT Problem Solving (PS) | Re: X and Y. which is true?
VeritasPrepKarishma wrote:barakhaiev wrote:X and Y are positive integers. If 1/X + 1/Y < 2, which of the following must be true?(A) X+Y>4(B) X*Y>1(C) X/Y+Y/X<1(D) (X-Y)^2>0(E) None of...
View ArticleGMAT Problem Solving (PS) | Re: If x and y are positive integer and xy is...
Bunuel wrote:gmatchase wrote:Quote:If x and y are positive integer and xy is divisible by 4, which of the following must be true? Thank you for the reply Mike. When I sawxy , I didn't think that it...
View ArticleGMAT Data Sufficiency (DS) | Re: What is the value of x + 7 ?
What is the value of │x + 7│?Two cases:If x≥7: (x+7) ===> x+7if x≤7: -(x+7) ===> -x-7(1) │x + 3│= 14 Two cases:If x≥-3: (x+3) = 14 ===> x=11Valid, as 11 falls within the range of x≥-2If...
View ArticleGMAT Problem Solving (PS) | Set A consists of integers {3, -8, Y, 19, -6} and...
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View ArticleGMAT Problem Solving (PS) | Re: Set A consists of integers {3, -8, Y, 19, -6}...
smartmanav wrote:Set A consists of integers {3, -8, Y, 19, -6} and Set B consists of integers {K, -3, 0, 16, -5, 9}. Number Lrepresents the median of Set A, number M represents the mode of set B, and...
View ArticleGMAT Data Sufficiency (DS) | If two elements are dropped from set X {-10, -8,...
This topic have been merged with: http://gmatclub.com/forum/topic-128785.html
View ArticleGMAT Data Sufficiency (DS) | Re: If two elements are dropped from set X {-10,...
smartmanav wrote:If two elements are dropped from set X {-10, -8, 0, 6, 7}, what will be the percentage change in its mean?(1) The median of the set will remain the same(2) The range of the set will...
View ArticleGMAT Data Sufficiency (DS) | Re: What is the value of y?
Again solving intuitively, and reaching the answer faster.Picking the statement 2 first as it is the simpler of the two. (2) |3 – y| = 11 we get two values of Y; one +ve(14) and one -ve(-8). Not...
View ArticleGMAT Problem Solving (PS) | Re: A lighting store is stocked with 410...
emailmkarthik wrote:Bunuel wrote:emailmkarthik wrote: x= floor lamps410-x= table lampswe want to minimize:x*\frac{5}{100} + (410-x)*\frac{30}{100} ->123-\frac{x}{4} 4 is minimum value for x to be...
View ArticleIntegrated Reasoning (IR) | Re: For each of the following statements, select...
dave785 wrote:Umm.. that is most definitely a positive correlation for part C, although not a very strong one.Yes I agree.I had T, F, T.
View ArticleGMAT Data Sufficiency (DS) | Re: Is 1 > |x-1| ?
Is 1 > |x-1| ?(1) (x-1)^2 > 1(2) 0 > x (1) (x-1)^2 > 1|x-1| > 1The question asks if 1>|x-1| #1 tells us that the OPPOSITE is true.SUFFICIENT(2) 0 > x 1 > |x-1|If x is less than...
View ArticleGMAT Data Sufficiency (DS) | Re: What is the distance between a and b on the...
What is the distance between a and b on the number line?(1) |a| – |b| = 6(2) ab > 0(1) |a| – |b| = 6 I made a stupid mistake here. I assumed that because we are dealing with absolute values here,...
View ArticleGMAT Club Tests | Re: M09#12
I used 10 as my base and eventually got to 10/13.31.But how would you put this in decimal form and get .75 without a calculator?
View ArticleGMAT Problem Solving (PS) | Re: In how many different ways can the letters A,...
Possible arrangements:1) xcxxxxxx ---- 1C1 * 6!/(2!*3!) (D can be placed in 1 position)2) xxcxxxxx ---- 2C1 * 6!/(2!*3!) (D can be placed in 2 positions)3) xxxcxxxx ---- 3C1 * 6!/(2!*3!) (D can be...
View ArticleGMAT Club Tests | Re: m14#37
I took a bit longer but solved this using ratios.Convert dollars to francs: 10/24 = 95/x. Simplified this to 1/2.4 = 95/x. Cross multiply to get x=95*2.4 or x = 228. So 95 dollars = 228 franc.Now...
View ArticleGMAT Problem Solving (PS) | Re: A box contains 3 yellow balls and 5 black...
sgclub wrote:Bunuel, I don't get it even after reading the explanation. Aren't we reducing the total number of balls with each drawing? Consider 2 black balls and 1 white ballAt the first draw,...
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