Well Tom Daley was 14 when he participated in the 2008 Beijing Olympics. But in 2006 he didn't qualify for the Commonwealth games because he was too young (around 12).
There is also the youth Olympics for under 18's although I am not sure.
13-14 depending on hieght
Nothing to do with height. Divers have to be 14 by the end of the Olympic year (31st December), so they could still be 13 at the Olympics.
There isn't really an official age, although it is unlikely for a child to be physically capable of it all.
20 or just under
3 is the most common age start for Olympic gymnasts!
I believe the minimum age for competing in most Olympic sports is 16.
most start up companies are founded by people in what age group?
In most places, the age of consent is 16
you can be any age to try drugs
The start and end of middle age is sometimes debatable and can depend on the person. For most of the population, middle age begins at age 40 and ends at age 60.
Around age 13 or 14
Around the age 11. But it can start around the age 10 and go up to the age 14. But 11 is probably the most common.