I believe 204
All European countries but Vatican City and Kosovo participated in the 2012 London Olympics.
204 National Olympic Committees (NOCs) or countries took part in the 2012 London Olympics for 17 Days from July 27 2012 until August 12 2012
All European countries with the exception of Vatican City and Kosovo participated at the 2012 London Olympic Games.
204 nations or National Olympic Committees (NOCs) participated in the 2012 London Olympics.
204 countries participated in the 2012 London Olympics.
GHANA
Of course, Romania participated to the Olympic Games of London in 2012.
204 countries participated in London 2012
204 countries participated in London Olympics 2012.
204 countries
in london olympics 224 contries participated.
204