Math Tips & Tricks
I'll start this thread for tips & tricks related to mathematics. Let's not keep the scope of this thread limited to Quantitative section in GRE. Also let's keep Advance Mathematics (Derivatives, Integrals, Sperical Trigonometry etc.) out of this thread.
Post short-cuts, quick mental calcuation tips etc. in this tread. Let our fellow engineers benefit π
I'll put a few tips & tricks soon. Let the posts begin!
-The Big K-