A decathlon is ten event, in order
In the Olympics, there are 17 Track and Field events, plus two relays, two walks for men and the Marathon. There are many other non-Olympic level track and field events, the entire list of imperial distance (yards) events (aside from the mile) was removed from official status where the IAAF (the world wide governing body) decided to no longer keep records. That doesn't mean those are no longer events. So you have to define the list of events you are questioning first.
A decathlon is, in orderDay 1100mLong JumpShot PutHigh Jump400 mDay 2110HDiscusPole VaultJavelin1500mRead more: What_are_the_olympic_field_events_in_the_decathlon
how many event make up a decathlon
A decathlon :)
A monoathlon or an 'event'.
Javelin, which is the 9th of the 10 events performed in a decathlon.
The last event in a track and field decathlon is the 1500 meter run.
Heptathlon includes seven events and only women compete. Decathlon is the male version.
Three throwing event are in the decathlon-Shot PutDiscus ThrowJavelin Throw