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!
Tuesday, June 19, 2007
A Closet Full of Shoes
A closet contains 10 pairs of shoes (20 shoes altogether). If 6 shoes are chosen at random, what is the probability that there will be no matching pair in the sample?