This museum puzzle is harder than it looks! Spot and count the total number of people to prove you have a high IQ.

They encourage you to think creatively and critically when under duress. Brain teasers, which range from visual puzzles to riddles, challenge your decision-making speed, sharpen your observation ...

If you are good with these types of riddles then consider that you have sharp observational ... you can calm yourself down and look out for the answer. READ ALSO: Brain teaser challenge: Spot the real ...