The Quiz during 0.6.4 update

Vallter: Apart from our many contests, we are also starting a quiz. It will be held while the server is down and will end at 18:00 (6 PM) UTC. During the Quiz we will post questions in our Twitter (worldoftanks.com) and you can submit answers to prizes@worldoftanks.com The first three players who answer correctly will receive 500 Gold for the question. Please indicate your server group and nickname in the e-mail, or it will be difficult for us to give you your prize.
We will post a new question every 20-30 minutes.
Q: Why do you make it on Twitter?
A: It is possible, as the servers are being updated for the new patch, the forums may also be out for some time due to technical maintenance. And we don't want to interrupt the Quiz because of technical inconvenience.
Q: What is Twitter?
A: It's a worldwide social network - www.twitter.com .Here you can read about it on Wikipedia
Q: I don't want to register on some unknown social network.
A: It is a very famous network and you do not have to register! Just find us on Twitter and be ready for the questions. That's all! We remind, that you have to send answers via account related e-mail to prizes@worldoftanks.com
Q: Why are the questions so difficult?
A: They were composed by our game developers and that's why you are earning gold for them!
Q: I WANT THE PATCH NOW!!! STOP THE EVENTS! QUIZ??? I DON'T WANT THE QUIZ! GIVE ME THE PATCH!
A: We will update the server ASAP. But some of us have to have the server up to do our job, so we have time to make this Quiz for you, to keep you and us entertained while the server is down.
PLEASE!!! Do not post the answers on forums or in Twitter! Or you won't receive your gold