A century is 100 years. So twenty of those would be 2000 (two thousand) years. Otherwise known as two millennia.
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A score is 20. 20 x 20 is 400. That is 4 centuries.
No. 1 decade = 10 years 20 decades = (20 *10)= 200 years 2 centuries = 200 yrs. They are the same.
A century is 100 years, so 2 centuries is 200 years.
20 decades are in 2 centurarys
20 decades= 20(10)=200 yrs 2 centuries= 100(2)=200 yrs So they're equal, unless there's a trick to the question