Introduction
There are 25 questions 
, in one page, about world countries and cities (with their "international english" names 
, and the population known in 2005).
For each, there is one (and only one) good answer 
. Click on it.
Questions are generated automatically, from somewhat easy 
to very hard . You can answer randomly, but errors 
are worst than no responses.
Duration is not observed, you can be as slow as you want. 
You should do this test alone, without any help, and in a quiet environment.
Result 
will be shown at the end (without need to "suscribe" to any service or other similar greedy things). You'll learn a little bit more each time, so your result will certainly sligthly improve 
test after test (but not much).