There are: 1000/2 = 500 years
One millennium is one thousand years (1,000 years).
One generation is 25 years.
One Thousand years.
20 years
I think you should get the one with many years of experience
1.44
There are 100 years in one century.
One generation is twenty years.
One generation is twenty years.
About 1.9 years.
A century is 100 years.
There are about 0.000114077 years in one hour.