I'm posting one puzzle, riddle, math, or statistical problem a day. Try to answer each one and post your answers in the comments section. I'll post the answer the next day. Even if you have the same answer as someone else, feel free to put up your answer, too!
Monday, May 24, 2010
The Pen is Mightier than the Pig
How can you build pig pens so you can put nine pigs in four pens such that each pen has an odd number of pigs?