A decathlon is always ten events. If you take out the discus throw, then you have nine events.
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A decathlon consists of 10 track and field events
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The Decathlon
The heptathlon and the decathlon are variations of the same event, combined-events. In outdoor track and field, women do the heptathlon, consisting of seven events, and men do the decathlon, consisting of ten events. Both of the events have events in them that are power and speed related with one that is more endurance related.
Deca=ten events.ten or 1010 events in total. 4 are track events and 6 are field events. The track events are ordered at the beginning and ending of each of the two days the decathlon is held on.TenA decathlon is, in orderDay 1100mLong JumpShot PutHigh Jump400 mDay 2110HDiscusPole VaultJavelin1500mRead more: What_are_the_olympic_field_events_in_the_decathlon
There are 6 field event in a decathlon: Long Jump, Shot Put, High Jump, Discus Throw, Pole Vault, and Javelin
A decathlon is, in orderDay 1100mLong JumpShot PutHigh Jump400 mDay 2110HDiscusPole VaultJavelin1500mRead more: What_are_the_olympic_field_events_in_the_decathlon
In orderDay 1Long JumpShot PutHigh JumpDay 2DiscusPole VaultJavelin
10 eventsA decathlon is, in orderDay 1100mLong JumpShot PutHigh Jump400 mDay 2110HDiscusPole VaultJavelin1500mRead more: What_are_the_olympic_field_events_in_the_decathlon
A decathlon is ten event, in orderDay 1100mLong JumpShot PutHigh Jump400 mDay 2110HDiscusPole VaultJavelin1500mRead more: What_are_the_olympic_field_events_in_the_decathlonIn 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.