100
28 events
there are usually 100 events
38
there will be 38 sports but 300 events
48?
According to the official International Olympic Committee's website, "Current Olympic Games programme (For the Beijing 2008 Summer Games) includes 35 sports and nearly 400 events. There are also past Olympic sports and sports recognised by the Olympic Movement." This obviously fluctuates from Olympics to Olympics and between Summer and Winter games.
302
There are 17 Men'a events and 17 Women's events for Swimming
It depends on the number of events that year.
There are many events that are played every four years, such as the FIFA World Cup, The Summer Olympics, The Winter Olympics, The Rugby World Cup and many, many other events.
205
302 events