Here are the answers to the riddles. The riddles are numbered so you match the number with the riddle number. If you don't understand an answer just comment what you don't understand. :)
1. Water. The letters are H to O which sounds like H20 which is water.
2. Fill the vase with water and the ball with hit the top.
3. Move the top stick up a bit like the picture below.
5. The chef killed him. He said he was getting the mail, but the mail doesn't come on Sunday.
