Although I am also a newbie let me say one thing.

I was disappointed with this person's answer on the quiz. Because he is a total newbie how he answered 21 questions correctly.

I think he tried 3 to 4 times. When able to give 21 correct answers.
Then he is posting.

@GazetaBitcoin,
A contestant can participate in  Quiz only once.
He cannot try more than once. If you make such an arrangement. I think it would be good.