A period of hundred years is called a Century.
10 decades is equivalent to one century.
The years from 2000 to 2099 is called the 21st century.
A. 10
B. 100
C. 1000
D. 1
Correct Answer: A
Step 1: A century is a time period of 100 years.
Step 2: 1 Millennium = 1000 years = 10 × 100 years = 10 centuries [As 100 years = 1 century].