How come we are in the 21st century if we are in the 2000s and not 2100s?

Question

How come we are in the 21st century if we are in the 2000s and not 2100s?

In: Other

Answer 1

The first century went from the year 1 to the year 100, so the 2nd century was from 101 to 200, which mean the 21st century s from 2001 to 2100.