Question: Can you find the missing number in the below series? 43, 8, 38, 9, 34, 11, _, 14
Answer: One series is 8, 9, 11, 14 (add 1, 2, 3) and the second series is 43, 38, 34, ? (subtract 5, 4 - next number to substract is 3). Correct answer is 31
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.