We tried something earlier and it didn't quite work (don't click here because that would be cheating).

But a good suggestion came in from reader Caitlin Jenkins, so we'll try something else.

Basically, with the so-called Group of 20 in the news today because of the gathering of world leaders in Pittsburgh, the question comes up: Who's in the G-20?

Here's a little test. We've thrown in 30 possibilities. See how you score: