The DATA SUFFICIENCY section is often quoted as the most challenging section in the GMAT. Each question scored right in this section has a significant leverage on you score -especially since a majority of candidates stumble in it.
If you liked the tools and tips in our math toolkit, you will love our Data Sufficiency hackbook.
The hackbook is the compilation of exhaustive GMAT Data Sufficiency tips, tricks and speed hacks illustrated with advanced questions to give you the practice you need. Each and every question has been carefully researched to expose you to a key learning. If you are serious about demolishing the Data Sufficiency section, this is a must have guide.