 In seismology, Roman numerals are used to designate degrees of the Mercalli intensity scale of earthquakes.In sport the team containing the "top" players and representing a nation or province, a club or a school at the highest level in (say) rugby union is often called the "1st ", while a lower-ranking cricket or American football team might be the "3rd ".In tarot, Roman numerals (with zero) are used to denote the cards of the Major Arcana.