Difficult "IQ" test This is a very interesting IQ test. You are basically ranked against all the others who also took the test. There are 20 questions total, but it calculates your percentile as you go. I answered all 20 this afternoon and got 94th percentile, answering 13 of the 20 questions correctly. I found some of the questions to be MUCH more difficult than normal IQ tests so it was very fun to take. http://www.mental-testing.com/ If anyone knows how to correctly do #6 (Amelia Earhart problem) please let me know! I thought I did it correctly but it said I gave the wrong answer.