I was going thru the MCAT math review and there were chapters about vectors and natural logs.... Do we need it for the DAT QR?
and what do u guys recommend to study QR?

As far as vectors, I guess it would be possible to get one of those problems like a boat moving across a river with a current, but I didn't get anything like that. And any problems I got with Logs were VERY straightforward, mostly just testing my knowledge of the Log rules and identities (like addition/subtraction etc.) .

As far as study material, I just used the Kaplan online workshops and quizzes, and I thought it was great. I was more than happy with my 18 QR, haha.