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by Testluv » Sat Jul 03, 2010 9:33 am
Hi Pradeep,

what a timely question!

Timely because my colleague just happens to answer it in a recent article: https://www.beatthegmat.com/mba/2010/07/ ... bility-101

Probability is a fairly marginal question type. I would recommend mastering the basics of probability as it shows up on the GMAT but to not spend too much time wrapping your head around difficult probability questions. Of course, if you are gunning for a 750+, my answer changes. But, even then, you are better off first mastering arithmetic, algebra, geometry, and number properties.
Kaplan Teacher in Toronto