I'm always amazed that anyone who actually read the articles can possibly have trouble. I didn't miss ANY questions when I took it.
The questions are right out of the material you're asked to read. Have you actually READ it?
I think some people get into a big hurry, and want their money fast, and rush their way through it. Take your time, read the material, then take the test.
If you honestly believe that little quiz is Impossible then, I think that your chances of ever becoming a winning player may be impossible. Seriously, take your time, read the material, and make sure you understand it. Then retake the quiz.
Good skill to you!