The IOC site for the 2002 Winter Olympic Games （页面存档备份，存于互联网档案馆） gives erroneous figure of 77 participated NOCs, however one can count 78 nations looking through official results of 2002 Games Part 1 （页面存档备份，存于互联网档案馆）, Part 2 （页面存档备份，存于互联网档案馆）, Part 3 （页面存档备份，存于互联网档案馆）. Probably this error is consequence that Costa Rica's delegation of one athlete joined the Games after the Opening Ceremony, so 77 nations participated in Opening Ceremony and 78 nations participated in the Games.
olympic.org
The IOC site for the 2002 Winter Olympic Games （页面存档备份，存于互联网档案馆） gives erroneous figure of 77 participated NOCs, however one can count 78 nations looking through official results of 2002 Games Part 1 （页面存档备份，存于互联网档案馆）, Part 2 （页面存档备份，存于互联网档案馆）, Part 3 （页面存档备份，存于互联网档案馆）. Probably this error is consequence that Costa Rica's delegation of one athlete joined the Games after the Opening Ceremony, so 77 nations participated in Opening Ceremony and 78 nations participated in the Games.
The IOC site for the 2002 Winter Olympic Games （页面存档备份，存于互联网档案馆） gives erroneous figure of 77 participated NOCs, however one can count 78 nations looking through official results of 2002 Games Part 1 （页面存档备份，存于互联网档案馆）, Part 2 （页面存档备份，存于互联网档案馆）, Part 3 （页面存档备份，存于互联网档案馆）. Probably this error is consequence that Costa Rica's delegation of one athlete joined the Games after the Opening Ceremony, so 77 nations participated in Opening Ceremony and 78 nations participated in the Games.
