A score is 20 years. A decade is 10 years. So in 10 decades we've had 100 years. Thus there are 5 scores in 10 decades.
10 Years/1 Decade x 10 Decades ÷ 20 years/1 score = 5 scores
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365.25 days in a year 10 years in a decade 5x3,652.5 5x4,000=20,000 "Five decades is more than 20,000 days" is FALSE.
1 score = 20 years2 millenia = 2,000 years = 100 score
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20 years.