those set kind of a low bar. don't we have a test that more rigorously examines whether you infer correctly from data or not?

if anyone wants some fun (not making any claims about whether solving these indicate rationality, just for fun) try the blue eyes problem http://www.xkcd.com/blue_eyes.html and the "hardest logic puzzle in the world" http://en.wikipedia.org/wiki/The_Hardest_Logic_Puzzle_Ever

the blue eyes puzzle in particular I enjoyed immensely.