EASY PIONTS
A man is trapped in a room with only to possible exits: two doors, the first door is constructed from magnifying glass. The blazing hot sun fires up anything or anyone that steps inside. The other door has a fire breathing dragon on the inside how does the man get out of there
Either 1 you find a way to slay the dragon and escape through that door or you wait until the planet makes its rotation around the sun and escape when the sun isn't hitting the door.