A book about probability, chance, and how to figure them--real math in a book that's fun. Watch Danny and Brian in action at school, at home, and at play, and discover for yourself that chance has a part in a surprising number of everyday situations. If the weather forecaster predicts a 60 percent chance of snow, should Danny count on a "snow day"? Has Brian bought enough chances to have a chance at winning the PTA raffle? Will Danny's mother's new baby be a boy or a girl? Do you wanna bet?