Revolut has opened a Learn & Earn program, similar to Coinbase, which offers $ 10 (in DOT) for a few quizzes.
LINK For REGISTRATION
https://revolut.com/referral/viorelykgi!APR2-22-ARYou can find them in the Crypto (Scroll down) tab -> Learn -> See All
Answers:
Crypto Basics
1 - 3, 2, 1
2 - 3, 4, 1
3 - 1, 4, 2
4 - 2, 4, 1
Polkadot
1 - 3, 1, 2
2 - 4, 1, 2
3 - 1, 3, 4
4 - 3, 1, 1
5 - 4, 2, 1