GMAT Problem Solving (PS) | Re: In the x-y plane the area of the region...
This is an interesting combo of absolute values, plotting lines in coordinate system and then finding the resulting figure's area. Thanks all for presenting the approach!
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GMAT Data Sufficiency (DS) | Re: Is xy > 0? (1) x-y > -2 (2) x-2y < -6
Graphic approach:Attachment: xy.png [ 8.35 KiB | Viewed 42 times ] Is xy > 0?xy>0 means that x and y must have the same sign, so point (x, y) must be either in the first or the third quadrant...
View ArticleGMAT Problem Solving (PS) | Re: In racing over a given distance d at uniform...
up4gmat wrote:Bunuel wrote:hardwoker1010 wrote:I want to ask bunnel how did he get this" 20 yards before the finish line C is 8 yards ahead of B, and since the final difference between B and C is 10...
View ArticleGMAT Data Sufficiency (DS) | Re: If x, y, and z are positive numbers, is x -...
navigator123 wrote:mattce wrote:If x, y, and z are positive numbers, is x - y < z?(1) x + y < z (2) xy < z^2Nice question Is algebraic approach possible for this question? If anyone solved...
View ArticleGMAT Problem Solving (PS) | Re: A rectangular box has dimensions 12*10*8...
Similar questions to practice:the-inside-of-a-rectangular-carton-is-48-centimeters-long-138301.htmla-rectangular-box-has-dimensions-12-10-8-inches-what-is-the-28790.html...
View ArticleGMAT Problem Solving (PS) | Re: The figure shown represents a board with 4...
Just a couple of generalization. As you have already known making generalization is important in order not to solve every GMAT question from the very beginning, in other words, to solve GMAT questions...
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GMAT Quantitative Section | Re: Necessity of finishing OG Quant
Hey Karishma, thanks a lot for the advice! Another question: I ve just done another CAT and ended up with 37 in Q...During my preps there seems to be a pattern as I am always in the 40-44p. range...
View ArticleGMAT Problem Solving (PS) | Re: A cylindrical tank of radius R and height H...
arjunbt wrote:A cylindrical tank of radius R and height H must be redesigned to hold approximately twice as much liquid. Which of the following changes would be farthest from the new design...
View ArticleGMAT Problem Solving (PS) | Re: PS: Perm & Combination Problem
Maxirosario2012 wrote:srivas wrote:A five-member committee is to be formed from a group of five military officers and nine civilians. If the committee must include at least two officers and two...
View ArticleGMAT Problem Solving (PS) | Re: Numbers 3
Bunuel wrote:jeeteshsingh wrote:Is there a specific approach to tackle this? No specific approach.We have the sum of many numbers:(1!)^3+ (2!)^3 + (3!)^3 +...+(1152!)^3 and want to determine the...
View ArticleGMAT Problem Solving (PS) | Re: According to a survey, at least 70% of people...
Here's another quick way to arrive at the solution:1. A+B+C+AB+BC+CA+ABC=100 --- (1)2. A+B+C+2AB+2BC+2CA+3ABC = 225 --- (2)(2)- (1) -> AB+BC+CA+2ABC = 125 --- (3)(3) - (1) -> ABC-A-B-C = 25...
View ArticleGMAT Data Sufficiency (DS) | Re: Annual interest
Bunuel wrote:Actually you don't need to solve...
View ArticleGMAT Data Sufficiency (DS) | Re: p^a*q^b*r^c*s^d=x, where x is a perfect...
The key to this problem is understanding the fact that for p, q, r, s to be distinct andxto be a perfect square:a, b , c , d MUST be evenor ab , cdMUST be a multiple of 4.If ab , cd are NOT necessarily...
View ArticleGMAT Problem Solving (PS) | Re: The variable x takes on integer values...
fozzzy wrote:knightofdelta wrote:How can the probability of doing something be 3/2?How can the probability of doing something be greater than 1?I don't understand what y'all are calculating. The final...
View ArticleGMAT Problem Solving (PS) | Re: A regular pentagon is inscribed in a circle....
from a logical standpoint, in all regular figures the diagonals (drawn through the centre) will bisect the angles. Consider a regular hexagon ABCDEF. let O be the point of intersection of all...
View ArticleGMAT Club Tests | Re: PS - % (m02q37)
This question highlights one of the most important aspects of the GMAT: Correctly interpreting the question. If you consider that only 320 bulbs were used to light the gym, and each was 1$, then it's...
View ArticleGMAT Data Sufficiency (DS) | Re: What is the number of cans that can be...
Bunuel wrote:Im2bz2p345 wrote:Hi Bunuel,Your statement (2) does not make sense to me. Should it say this instead? (2) The exterior of each can is 6 inches high and has a diameter of 4 inches. No...
View ArticleGMAT Quantitative Section | Re: 198 Level 700+ questions from GMAT Prep I
Thanks a lot! This really helps!
View ArticleGMAT Problem Solving (PS) | Re: The sum of all the digits of the positive...
I also solved it by finding a pattern:For n = 3: q = 10^3 - 49 = 951 For n = 4: q = 10^4 - 49 = 9951For n = 5: q = 10^5 - 49 = 99951etc...We can see that the number of 9 digits is 2 less than n. We...
View ArticleGMAT Problem Solving (PS) | Re: Alex and Brenda both stand at point X. Alex...
I tried number plugging in this question. Let's say R = 10, now Alex has already been walking for an hour so he has already completed a distance of 4 miles. Brenda starts an hour later, in one hour...
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