For a race or contest in which a predetermined number of entries compete for winning position wherein for each of the entries respective predetermined odds of winning are given, a method is provided for determining a plurality of wagers wherein each of the wagers is to be placed on a respective one in...http://www.google.es/patents/US8137175?utm_source=gb-gplus-sharePatente US8137175 - Pari-mutuel wagering system
