Question: Find the five digit number in which the first digit is one half of the the 4 fourth digit, the second digit is one fourth of the last digit, the fourth digit is 3 times the second digit, and the third digit is the first digit plus 4.
Answer: 32768. The first digit, 3 is half of the fourth digit, 6. The second digit 2 is one fourth of the last digit 8. The fourth digit, 6 is 3 times the second digit which is 3x2, and the third digit is four more than the first digit which is 3+4 which would be 7.
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.