8 Newbie accounts that have name ending with "@" (its not easy to come up with a more unique account names when you create them in bulk) did the quiz in the matter of ~3 hours. What are the chances for that to happen and not to have the same owner? 
I guess he liked the merit they received yesterday so they woke up another group of alt accounts.
I guess he liked the merit they received yesterday so they woke up another group of alt accounts. 
+1 Newbie account
This gives a total of 9 new accounts whose names end with "@". It can be said that the owner of these accounts is one.
First of all I thank you sir for creating this topic.I learned a lot about Bitcoin from this quiz.But haven't shared it yet.I would like to participate in such bitcoin quiz in the future.