Riddle

A riddle is a statement, question or phrase put forth for someone to solve as a puzzle. Riddler is well known for having an obsession with riddles.

When trying to find out what had happened to the great dam, the blackboard at Marvin's school and the steel girder on the skyscraper, Batman presented before the Superfriends a riddle: "What do all these materials have in common?" The answer Robin came up with is that they all come from the Earth, in copper mines, slate quarries and so forth.