Ball Hole science puzzle SOLUTION
Your last good ping-pong ball fell down into a narrow metal pipe imbedded in concrete one foot deep.How can you get it out undamaged, if all the tools you have are your tennis paddle, your shoe-laces, and your plastic water bottle, which does not fit into the pipe?
Solution:
All you have to do is pour some water into the pipe so that the ball swims up on the surface.