A Sure Way to Beat GMAT Data Sufficiency Problems - Videos

very usefull video ……….. thank-u


VeritasPrep is awesome ! Very subtle and absolutely brilliant :)

if a "N" (no) is enough to prove a statement is not sufficient, why bother choosing a number for a Y (yes), ….
just an opinion, saves time

@Neil Jason —  If you find one no, it does not make it sufficient. You have to prove that it is a 'no' in all cases for it to be sufficient. Or, you have to prove that it is 'yes' in all cases for it to be sufficient. If you are able to see that it is only "sometimes sufficient" it is insufficient,naturally.

Could someone please explain why statement 2 is not sufficient (as with the example where b=25)?

Hey have a look at this amazing video! Its really helpful for CAT/GRE/GMAT vocabulary- https://m.youtube.com/watch?list=PLtMMdSqG5Rhz4Zj1_IdMWjDsgB6KQvCMq&v=6tFdkHqjz-E

Thanks for the video, just one correction: it should be "is" and not "if" at the beginning of the problem