GMAT Problem Solving (PS) | Re: If x and y are prime numbers such that x > y...
In addition to what has already been stated, this is a number properties question, without testing any numbers (not sure if that's faster or slower) but: x>y>2 and noting that they are prime...
View ArticleGMAT Problem Solving (PS) | Re: when a certain tree was first planted
siddhans wrote:Bunuel wrote:anilnandyala wrote:when a certain tree was first planted, it was 4 feet tall & the height of the tree increased by a constant amount each year for the next 6 years. at...
View ArticleGMAT Problem Solving (PS) | Re: If 10^50 - 74 is written as an integer in...
10^1 = 1010^2 - 74 = 02610^3 - 74 = 92610^4 - 74 = 9926Basically for 10^n , its 9999....(n-2)26.So for 10^50-74, it is 99999....482648times9 + 2+6 = 440.
View ArticleGMAT Data Sufficiency (DS) | Re: Marcia's bucket can hold a maximum of how...
Let x be the total capacity of the bucket. 1. insufficient 2. sufficient. x/2+3 is the volume of water when 3 liters are added when the bucket is half full. x/2 + 3 = x/2 * 4/3 x=18 So B
View ArticleGMAT Problem Solving (PS) | Re: Audrey 4 hours to complete a certain job....
gary391 wrote:Audrey 4 hours to complete a certain job. Ferris can do the same job in 3hours. Audrey and Ferris decided to collaborate on the job, working at their respective rates. While Audrey...
View ArticleGMAT Quantitative Section | Re: GMAT Math Question of the Day
I answered OG 12 (Quant section) and the result is 78% of right answers. Is the result bad or good?If I keep this pace, how many points could I get ( approximately) with Quant part?Thanks in advance
View ArticleGMAT Problem Solving (PS) | Re: Rita and Sam play the following game with n...
ygdrasil24 wrote:so what is the generalisation in such questions or we just have to analyze everytime? The trick is to rephrase the question in more general terms. In this case it would be: What is...
View ArticleGMAT Data Sufficiency (DS) | Re: If A, B & C can build a wall in 4...
If A, B & C can build a wall in 4 hours,working together, at their respective rates. :- Let's Assume that A is building the wall in x days. So in one day he will build 100/x% of wall AND in one...
View ArticleGMAT Problem Solving (PS) | Re: A committee of 3 people is to be chosen from...
I solved it using this method, hope I'm using the correct concepttotal 4 couples = 8 people in totaltotal no of ways to choose 3 people out of 8 = 8!/(5!3!) = 56No. of ways couples are included in the...
View ArticleGMAT Data Sufficiency (DS) | Re: If a, b, and c are positive integers, with a...
I solved the questions by plugging in consecutive numbers. Got the ans D. Would you suggest to use plugging in method to solve such questions?
View ArticleGMAT Problem Solving (PS) | Re: In how many ways can 5 different candiesbe...
there are total 5 candies. Lets say A,B,C,D and E.Candy A can be distributed among any 4 children. So there are 4 ways of distributing candy A.similarly candy B,C,D and E can be distributed in 4...
View ArticleGMAT Data Sufficiency (DS) | Re: For a circle with center point P, cord XY is...
Quote:We have side:hypotenuse=1x:2x --> third side = \sqrt{(2x)^2-x^2}=\sqrt{3}*x I wonder if this is just today...that I am looking at this perfectly clear explanation and still do not get it. I...
View ArticleGMAT Problem Solving (PS) | Re: If f(x)=x^2/b^2 + 2x + 4, then for each...
In this question, we can see that the coefficient of x^2 is always positive, therefore the equation is a parabola facing upwards in a coordinate plane. In a parabola facing upwards there is only minima...
View ArticleGMAT Problem Solving (PS) | Re: A conference is to have eight presentations...
Bunuel wrote:sehosayho wrote: A conference is to have eight presentations over the course of one day, consisting of three long presentations, and five short presentations. If the conference organizer...
View ArticleGMAT Club Tests | Re: PS-Permutations (m08q30)
total number of ways = 5! = 1202 siblings cannot sit together.So consider them as 1 unit.total ways in which 4 people can sit = 4! = 24the 2 siblings can sit among themselves in 2! ways.5!-4!2! = 72C
View ArticleGMAT Problem Solving (PS) | Re: A set of 25 integers has a median of 50 and a...
emailmkarthik wrote:Shouldn't the question actually be "25 different positive integers" then?That question is here: a-set-of-25-different-integers-has-a-median-of-50-and-a-129345.html
View ArticleGMAT Data Sufficiency (DS) | Re: Bob's produced items last week
jeetmech152 wrote:Bunuel wrote:Stiv wrote:Why then the GMATPrep marks C as the correct answer?I answered E but when I checked the solution, it was C... Correct answer as well the answer given in GMAT...
View ArticleGMAT Data Sufficiency (DS) | Re: 700 level question
ygdrasil24 wrote:Is it a 700+ question ? , Do such questions come ?Yes, it's a 700 and valid question.
View ArticleGMAT Problem Solving (PS) | Re: Fresh Meat!!!
rrsnathan wrote:Bunuel wrote:10. If x is not equal to 0 and x^y=1, then which of the following must be true?I. x=1II. x=1 and y=0III. x=1 or y=0A. I onlyB. II onlyC. III onlyD. I and III onlyE....
View ArticleGMAT Data Sufficiency (DS) | Re: If k is a positive integer, is k a prime...
For sure statment2 requires "Inclusive". E.g) K=8, then between 2 & K/2. There is no interger between 2 & 4 that divides 8.Similary,K=7,then between 2 & K/2 there is no integer that divides...
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