I looked at the test 004. This is a sample test. How many questions there are in the actual test. How much time is given for the test. Are the candidates well prepared at college to address that kind of a test. What are the criteria to pass that test. As to the fairness of the test it is difficult to make an assesment from afar.
The best way to prepare for math test is always, solve, solve and again as many problems as you will need to answer this tipe of question with as fast as possible.