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!
Wednesday, January 14, 2009
How Big is Your Wallet?
You can't buy it in a bookstore or take it from a library. Only the wealthy could own it once upon a time, but now everyone can have it. What book am I talking about?