Question: A van with 15 seats carried only 14 passengers plus the driver. Each passenger entered the van alone and occupied only one seat. Without considering the heart of the driver, upon critical observation, there are 29 hearts beating in the van. How is this possible?
Answer: All the passengers who entered were women who were two months pregnant with one woman who had twins.Therefore, considering the heartbeats of the fetuses and the mothers, they were 29.
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.