However, I think this quiz is impossible because of questions like this:
19. The answer to this question is:
AA
BB
CC
DD
EEWTF?
The answer you give will obviously always be right, but you may need to pick a specific answer in order for other answers to be right (like "5 of these questions have answer A", or something.)
For a similar reason, you can't necessarily say that #9 can be answered using #10 and #16.
They lead to a possible answer, but you can't say that's right until you eliminate all the other ones.
Edit: After a good two hours and a piece of paper filled with scribbles, I've now got it.
#2 and #13 provide useful restrictions that can help.
However, I think this quiz is impossible because of questions like this:
19. The answer to this question is:
AA
BB
CC
DD
EE
WTF?
]]>Make sure you're not doing anything for the rest of the day.
I've filled in two answers, and I have little to no idea of how to progress.