I want to share with everyone the video explanations to all of the problems in the quantitative section of the new Official Guide for GMAT Review 13th Edition. There is a significant overlap with GMAT 12th Edition. The 81 new problems are highlighted with red color for students who already own the Official Guide GMAT 12th Edition.http://www.gmatquantum.com/og13th/
I just want to vouch for Dabral and GMATQuantum. His explanations to these questions are absolutely fantastic. They have helped mold my thinking and approach to the GMAT quant section, without them I would not have scored 700+ on the real exam. More people need to know about this website.
I have also paid for his actual course and it is well worth the money. One of the best things about the paid version is that he categorizes all of the questions in the GMAT Prep software by topic which helps me with targeted practice.
"Never, Never, Never give in."
From 510 to 770:
From 2 dings to multiple admits (use Paul Bodine):