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Lindsay can paint 1/x of a certain room in 20 minutes. What
Lindsay can paint 1/x of a certain room in 20 minutes. What fraction of the same room can Joseph paint in 20 minutes if the two of them can paint the room in an hour, working together at their...
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What is the coefficent of x^18 in the expansion of
What is the coefficent of x^18 in the expansion of (x+x^2+x^3.......x^6)^4A)60b)70c)80d)90e)100
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A certain account pays 1.5 percent compound interest every
A certain account pays 1.5 percent compound interest every 3 months. A person invested an initial amount and did not invest any more money in the account after that. If after exactly 5 years, the...
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Rectangle inscribed in an right triangle problem
If x and y are two sides of a rectangle inscribed in a right triangle such that x|| x-axis and y || y-axis and lengths of legs of the triangle are 4 cm (on the y-axis) and 3 cm (on the x-axis)...
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Need Recommendations for Quant ( Number Properties) books
Friends, Can you please suggest the books that could help me ace the following topics on GMAT Quant :- a) Number System & Properties ( Problem Solving) b) Data Sufficiency Problems particularly...
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Boolean Algebra
Hey Guys,I have been having difficulty with converting problems into a logical boolean sentence in order to solve them. In the problem below I am not so much concerned with finding the answer but...
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If x is a positive integer, is square_root x
If x is a positive integer, is [(x)^(1/2)]^(1/2) ?(1) x is the square of an integer.(2) \sqrt{x} is the square of an integer.I agree with the OA. However, I have a doubt with (2):\sqrt{x} = i^2 , being...
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Various formulas necessary?
Hey, my quant is around 40-43 I 'd say. I am now asking myself whether I need formulas such as:-Arc Mesaure (Intersecting chords)- Arc measure (intersecting tangents/ secants)- Surface + Volume of...
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If P is a set of integers and 3 is in p, is every positive m
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How many different prime numbers are factors of the positive
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Sample Questions: Picking Numbers & Backsolving
Hi,does anybody has and could share a list of sample questions which can be used to train these techniques specifically?Thanks in advance Levent
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Doubt: GMAT Number Theory Question
If x is the smallest positive integer that is not prime and not a factor of 50!, what is the sum of the factors of x? 51547216250!+2Thank you so much!
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A gold cube is melted down and formed into a right...
A gold cube is melted down and formed into a right cylindrical solid. Is the height of the cylinder greater than twice the height of the cube?(1) Twice the square of the height of the cube is greater...
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Mr. Alex usually starts at 9:00am and reaches his office jus
Mr. Alex usually starts at 9:00am and reaches his office just in time, driving at his regular speed. Last Wednesday, he started at 9:30am and drove 25% faster than his usual speed. Did he reach the...
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If a,b,c,d are positive integers, what is the value of
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The following is an additive table . Find the value of m+n
The following is an additive table . Find the value of m+n+ x y z4 1 -5 me 7 n 10f 2 -4 5A -19B 5 C -8 D 10E 22how do you solve this?It looks easy but somehow I'm not able to crack it.
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How to deal with functions+lines with an outstanding example
Basics: if a straight line passes through two different points such as (a,b) and (c,d) then,the slope of the line = b-d/a-c .if a function is given and a co-ordinate also with one unknown term its...
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John's front lawn is 1/3 the size of his back lawn.
John's front lawn is 1/3 the size of his back lawn. If John mows 1/2 of his front lawn and 2/3 of his back lawn, what fraction of his lawn is left unmowed?1. 1/62. 1/33. 3/84 1/25.5/8
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permutation and combination questions
I just want to check if there is any better way to solve the below problems:q1> In how many ways can a person choose 1 or more of 4 apples? Ans: 15 Way1> c(4,1)+c(4,2)+c(4,3)+c(4,4)=15q2>...
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