Theme Parks by Roller Coaster

Guess the world's twenty most-traded currencies, and the countries or special regions that issue them.

Beat the clock by answering these fifty randomly-generated multiplication problems.

There's something quite tricky about each one of these questions. Try and fail to answer them correctly.

On each line, you will see three countries. Guess the one that has the highest population of the three. One wrong guess and it's over.