The Science section is really hard and unrealistic. The Math section is alot harder than the first 3 tests I think. The 5th test has a "Piano" like passage. Its called "string instruments". I took the DAT in August and was piano'ed, and I believe the "string instruments" passage is comparable in difficulty as the piano. I would buy it just for the reading and PAT but the Science section was a waste of my time.
I actually took test 4 on the sciences in an untimed mode after seeing the feedback that the new tests are a lot harder. Many of the questions especially those of the bio section are really deep thinking and you get to learn a lot from there though.
