580 to 670 in 1 week!!!

yes u read it correct!! i took my test on 10th aug 2016 and got 670(q:46,v:36) when i planned to take GMAT i went strait to PRINCETON REVIEW(tpr),chennai. i also took GRE couching there and i'm satisfied with my GRE score so i did'nt think of any other center. i started my couching in FEB hoping to ...