Riddle: You are a prisoner in a room. There are two doors in this room. One leads to freedom, one leads to death. Each door is guarded by a guard. One always lies, one always tells the truth. You don't know which is which. What single question can you ask to find the door to freedom?
Answer: "If I were to ask the other guard which door leads to freedom, what would he say?" Then you choose the opposite one. Because if you ask the one that tells the truth, he would say the one that leads to death. The lying one will also say the one that leads to death, because he lies.
Riddle: What fruit can have the first letter taken away from it and become a crime. Remove the first and last letter and it will become a type of music. Remove the first two letters and it will become an animal. What word is it?
Riddle: We let apples in, but no bananas. We let pillows in, but no blankets. We let books in, but no libraries. We let school in, but no work. We let parrots in, but no birds. What is the rule of the Green Glass Door?