I had a bad feeling after the test, as I thought that many of the questions came down to two plausible answers after eliminating clearly wrong responses. From there it seemed like an exercise in guessing what they were thinking, such as one question where the 2 choices were using a higher than approved dose of a medication for a certain condition versus a non-approved medication with significant addiction risk. I was fully anticipating getting about 60% correct.
To my surprise I actually did much better. I'm sure a number of questions got discarded, but I have seen no data about that for this exam