I am using the 4th edition of the Manhattan GMAT number properties
book. I have a question concerning the book. he book in the later section referecences three other books.
The Official guide for GMAT review 12th Edition
The Official guide for GMAT review Quantitative Review
The Official guide for GMAT review Quantitative Review, 2nd Edition
My question is this, Do I need to buy any of these books in order to get the most out of this book? I know starting off Quanatitive is my weaker area. I would like to master it before moving on to studying for the verbal section.
Thanks in advance