Only one, tennis.
CORRECTION: I'm sorry, I was wrong about that- they actually competed in EIGHT events- athletics, cycling, Mountain Biking, gymnastics, 4.1 rhythmic, sailing, shooting and tennis. They won their first ever Olympic medal in London this year, a silver in the men's sailing.
Sorry to have misled you on that one!!
No she was not one of the Athletes sent to the Olympics for Australia Swimming Events
The 2010 Olympics is a Winter Olympics. There are no running events in the winter. Wait until 2012 in London.
over 10,000 athletes will compete in the 302 events
There are multiple events and many athletes compete in more than one or two events
They did not have a team that had qualified to enter the completion as there were a limited number of teams and they had to qualify from events before the Olympics
200.000 will compete
The US will compete in 25/26 sports. The exact number of events are not known as they have to do with placement and medaling.
yes
No Prince Harry did not compete in the 2012 Olympics.
Yes
2012
The BBC reported that 205 countries are competing in the 2012 olympics, bringing 10,500 athletes to compete in 300 events.