camitava wrote:This problem is really challenging! And if this type of qs comes in GMAT, I am going to commit suicide ...
Yop! Jokes apart. This problem is really interesting.
Hey if u commit suicide, i will certainly kill you

....
guys u most probably will not find such questions unless ur about to cross the 760+ mark .. so my advice is dont aim very high

.. just kidding ..
but these questions are GMAT questions developed by manhattan GMAT, which is one of the top GMAT prep tutorials .. and they claim this to be 700+ level ... but i have a feeling that this is more like 760+ level .. though i did solve the question here i dont think that in the heat of the exam i would solve it ... u can find one such question every week on their website(u wont find the solution though)
www.manhattangmat.com .. this is where i get them from ..
@ samir you certainly dont need to practise cat level questions for GMAT, both are really different and cant be compared ... just keep practising tough GMAT questions from different sources .. bye and tc ..
PS:- If u guys are really looking for tough GMAT questions I will suggest you to visit the Manhattan GMAT website ..