Yah, it's been mentioned a few times. I think it's funny but not too appealing. For starters they should give you an overview of which questions you got wrong. Because, quite frankly, I think they got some questions wrong themselves.
19%, and yeah, like Shell said, I'm quite sure that some answers are wrong, as I only guessed on like one of them. They should really allow you to see what you did wrong without giving your email address.
