Question: The 22nd and 24th Presidents had the same biological mother and father, but weren't brothers. They were both male, and were never female. Neither were adopted or "switched at birth". How is this possible?
Answer: They were the same person. The 22nd President was Grover Cleveland. After his first term, Benjamin Harrison was voted into office. Once Harrison was voted out of office, Cleveland was voted back in, becoming the 23rd President.
Question: You have a glass of water that looks about half full. How can you tell, only using the glass of water itself, if the glass is half full or not?
The glass is a right cylinder.
Answer: Tip the glass of water until the water reaches the rim of the glass and if the water lines up perfectly with the bottom rim of the glass, it is half full.