Decade is a time period of ten years.
Decade has been derived from Latin word 'Decas'.
The years from 2000 to 2009 forms a decade.
A. 10
B. 100
C. 1000
D. 1
Correct Answer: A
Step 1: Decade is a time period of 10 years.
Step 2: 1 century = 100 years = 10 x 10 years = 10 decades [As 10 years = 1 decade.]