2) Mary's husband's father-in-law is Mary's husband's brother's brother-in-law, and Mary's sister-in-law is Mary's brother's stepmother. How did this happen?
Over the side of a boat floating in a harbor
3) Over the side of a boat floating in a harbor there hangs a rope ladder containing ten rungs. Each rung is one foot from the next one and the bottom rung is resting on the surface of the water. The tide rises at a rate of one foot an hour. How long will it take the water to reach the top rung?
Huasing Association 1999 - 2013