Please solve this DS question...and give detailed explanation! Yes OA must be D. As 3 right angles are similar we know BE =3 in case 1 and DE = 4 in case 2 if we take case 1 or case 2 individually we can find out all hands of triangle BDE. Now as triangles are similar we can also find out AB in bot...

(1) n^3 - n is a multiple of 3 (2) n^3 + 2n^2+ n is a multiple of 3 Option 1... n^3 -n = n(n^2 - 1) = n (N^2 - 1^2) = n (n + 1) ( n - 1) Option 2 ... n^3 + 2n^2+ n = n(n^2 + 2n + 1) = n (n+1) ( n + 1) now from option (2) . either n or (n+1) is multiple of 3. in any case n - 1 would not be a multiple...

Dear Anurag, This is in reference to the below math question http://www.beatthegmat.com/each-pair-has-a-different-sum-t77786.html The smallest sum = (p + q) = 1 2nd smallest sum = (p + r) = 2 This means P is either (-)Ve .... Next two smallest sums are (p + s) and (q + r). In this case if we assume ...

Very tough Math problem!!

Topic: Square countertop Sat Oct 25, 2008 8:26 am Elapsed Time: 00:00 Why a timer is critical to improving your score A square countertop has a square tile inlay in the center, leaving an untiled strip of uniform width around the tile. If the ratio of the tiled area to the untiled area is 25 to 39, ...