I was looking at
Manhattan Prep's latest version of Advanced Quant (2024 Edition) and comparing that with the previous editions (2020 and 2015). In the older version, there used to be two chapters (Chapter 3 and 4) dedicated to Data Sufficiency Principles/Strategies and Tactics. However in the 2024 Edition, these two DS chapters seem to be taken out.
Would it be possible that someone from
Manhattan Prep clarify what is the rationale? Are these two chapters no longer relevant?
The reason I asked is because, there are relatively scarce resources for DS and I was planning to use these two chapters from the older Advanced Quant book. But if they are no longer relevant/applicable in GMAT FE, I am not sure I should still use them.
Any feedback would be greatly appreciated.