Quote from jjchoi:
I have taken the series 56 twice thus far and have failed both times. I'm pretty stunned given that I read the cboe study guide twice, pretty carefully, and read the supplemental material on their website as well.
Some of the questions are used over again, so if you have a good memory of what the questions were, it will help you next time you take it. More importantly though, there were a lot of questions that are not explicitly covered in the test, so you have to make inferences by drawing upon multiple pieces of information. I'm probably gonna have to buy passperfect study guide in order to pass it.