PS - Permutations Q

Hi, How would the solution to this question differ if it were "row" vs. "circular"? 4 people are to be seated around a circular table at a banquet. If there are exactly 4 places around the table where the people are to be seated, in how many different orders may they be arranged?...

Hi, From(2):As xy<0, |xy| = -xy case-1 : |x| - |y| < 0 As |x - y| > 0, |x - y| > |x| - |y| always holds case-2 : |x| - |y| > 0 |x - y|^2 = x^2 + y^2 - 2xy = x^2 + y^2 + 2|xy| (|x| - |y|)^2 = x^2 + y^2 - 2|xy| So, |x - y|^2 > (|x| - |y|)^2 So, |x - y| > |x| - |y| Sufficient B Frankenstein, Why would...

DS - absolute value

How would you efficiently work through this question?

Is |x - y| > |x| - |y|?

I. y < x
II. xy < 0

Answer is B

score vs. percentile vs. correct/incorrect

Hi all, I am sure a lot of you have reached this juncture in your studying so I will ask for your advice! What study strategy would you take if you are scoring high 40's in the Quant but only getting 60% of the questions correct on the GMAT Preptest Software? Should I be focusing on content, timing,...

ps - triangle in a circle from GMAT Prep Test

http://www.beatthegmat.com/area-of-triangular-region-t44447.html#187497 This question has been discussed but there are differing opinions on what angle in the triangle is 90 degrees and therefore, what the hypot represents. Can anyone clarify? The link is above. Thanks, Q. In the figure above, the r...

Due to fatigue, I jumped to the conclusion that wx^2= 16 = y^2 when in fact it is not equal.

Thanks for pointing out my mistake manpsingh87.

Cheers,

DS - males/females college

What fraction of this year graduation students at a certain college are males ? 1. Of this year graduating students, 33% of the males and 20% of the females transferred from another college. 2. Of this year's graduating students, 25% transferred from another college. The answer is C but what do we k...