GMAT Club Tests | Re: Consecutive Integers (m06q28)
If you use the formula n/2*[2a+(n-1)d] to find d, you will arrive at n = 21. Hence, there are 21 terms in the A.P. Now, k is the 21st term. nth of A.P = a+(n-1)d, herea=1n=21d=2 21st term of this A.P...
View ArticleGMAT Problem Solving (PS) | Re: The entire exterior of a large wooden cube is...
Obviously bunuel's solution is mindblowing and the best approach we need in such PS questions ...But just while brainstorming trying to find the solution to this problem i reached here ...Try to...
View ArticleGMAT Problem Solving (PS) | Re: Bob just filled his car's gas tank with 20...
VeritasPrepKarishma wrote:above720 wrote:Bob just filled his car's gas tank with 20 gallons of gasohol, a mixture consisting of 5% ethanol and 95% gasoline. If his car runs best on a mixture...
View ArticleGMAT Data Sufficiency (DS) | Re: Is x^2 greater than x? 1) x^2 is greater...
irda wrote:Hi Bunuel, How would do this sum in your way. The official answer, which is quite confusing is below. I am unable to understand it completely. I did the sum by evaluation the combinations...
View ArticleGMAT Problem Solving (PS) | Re: Eight litres are drawn off from a vessel full...
oldstudent wrote:virupaksh2010 wrote:Eight litres are drawn off from a vessel full of water and substituted by pure milk. Again eight litres of the mixture are drawn off and substituted by pure...
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GMAT Data Sufficiency (DS) | Re: If x and y are integers, is xy even?
Bunuel wrote:pvaller1 wrote:It is not explicitly mentioned that x cannot equal y!In this case :X/Y yields 1 and XY would therefore yield 1 -> an odd number I would have expected an extra...
View ArticleGMAT Club Tests | Re: sqrts and primes (m06q31)
I got totally lost on this one and looking forward to a correct, faster solution. Here's my process:0<x<53, so x = ?1)x is divisible by at least 2 prime numbers greater than 2which quickly...
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GMAT Problem Solving (PS) | Re: A solution contains 8 parts of water for...
udaymathapati wrote:A solution contains 8 parts of water for every 7 parts of Lemonade syrup. How many parts of the solution should be removed and replaced with water so that the solution will now...
View ArticleGMAT Data Sufficiency (DS) | Re: In the xy-plane, if line k has negative...
i solved like this-line passes thru (-5,r). Eqn r= -5m + c. since slope is -ve, if c is +ve , x intercept = +ve. otherwise -ve.statement 1. m=-5. r= 25 +c . c= r-25. c could be +ve or -ve depending on...
View ArticleGMAT Data Sufficiency (DS) | Re: If a is not equal to zero, is 1/a > a / (b^4...
VeritasPrepKarishma wrote:Archit143 wrote:Hi bunuel can you help with this question.....the book has given statement 1 is sufficient...it says that since b^2 is always positive so "a" must also be...
View ArticleGMAT Data Sufficiency (DS) | Re: Bob and Wendy left home to walk together to...
my soln;let distance = xtime taken to travel half the distance = x/6 hours. wendy reaches end in x/3 and waits.let bob,s new speed k. total time travelled by bob upto reaching end of journey- x/6+...
View ArticleGMAT Problem Solving (PS) | Re: For a certain exam,a score of 58 was 2...
patternpandora wrote:Bunuel wrote:MaithiliGokarn wrote:For a certain exam,a score of 58 was 2 standard deviations below mean and a score of 98 was 3 standard deviations above mean.What was the mean...
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GMAT Problem Solving (PS) | Re: A big cube is formed by rearranging the 160...
A big cube is formed by rearranging the 160 colored and 56 non-colored similar cubes in such a way that the exposure of the colored cubes to the outside is minimum. The percentage of exposed area that...
View ArticleGMAT Problem Solving (PS) | Re: Each of 435 bags contains at least one of the...
Diipz wrote:Diipz wrote:Bunuel wrote: Each of 435 bags contains at least one of the following three items: raisins, almonds, and peanuts. The number of bags that contain only raisins is 10 times the...
View ArticleGMAT Problem Solving (PS) | Re: NEW!!! Tough and tricky exponents and roots...
ashivapu wrote:Bunuel wrote:2. What is the units digit of (17^3)^4-1973^{3^2}? A. 0B. 2C. 4D. 6E.8Must know for the GMAT :I. The units digit of(abc)^n is the same as that ofc^n , which means that the...
View ArticleGMAT Problem Solving (PS) | For which of the following functions ...
This topic have been merged with: http://gmatclub.com/forum/topic-124491.html
View ArticleGMAT Problem Solving (PS) | Re: For which of the following functions ...
jvdegroot wrote:For which of the following functions is F(a + b) = F(a) + F(b) for all positive number a and b?A) F(x) = x^2B) F(x) = X + 1C) F(x) = \sqrt{x}D) F(x) = 2/xE) F(x) = -3xOfficial answer...
View ArticleGMAT Problem Solving (PS) | Re: There are 35 distinct numbers in set M, there...
antoxavier wrote:There are 35 distinct numbers in set M, there are 28 distinct numbers in set N, and there are 12 distinct numbers that are in both sets M and N. Set H is the set containing the...
View ArticleGMAT Problem Solving (PS) | Re: On average, the bottle-nosed dolphin comes up...
Diipz wrote:Asifpirlo wrote:slingfox wrote: On average, the bottle-nosed dolphin comes up for air once every two minutes; the beluga whale, a close relative, comes up for air on average once every...
View ArticleGMAT Quantitative Section | Re: 24 Very Imp++....Questions........
Hi, What is the source of these questions.Are they from GMAT PREP?
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