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20 years is called a score. This is derived from the Old English word "scoru", which means "twenty", and is used to describe a period of 20 years. A score is sometimes referred to as a "generation" or a "double decade".

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2 decades

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2 decades.

there is no formal name for twenty years. you could call it a score. but score can stand for twenty of anything.

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A duodecade

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Decaduece

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Double decade

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20 years may be referred to as a "score", as in Lincoln's Gettysburg Address, "four score and seven (87) years ago..."

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Vicennial

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Score

Q: What is 20 years called if 10 is called a decade?

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years to decade=/10 years to century=/100 example: 20 years=____decade =( 20 / 10 )decade =2 decade Note: / means divide

There 10 years in a decade.

Yes, a decade is 10 years and 10 years x 20 = 200 years.

There is no name for 15 other than related to 10 or 20. A decade is 10 years and a score is 20. So, 15 can be 3/4 score or 1.5 decades.

decade =10 years score = 20 years century = 100 years millennium = 1000 years

A Decade is 10 years. 200 x 10 is 2000.

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 Ã· 20 years/1 score = 5 scores

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 Ã· 20 years/1 score = 5 scores

20 decade

There are 10 years in one decade. Which means that 70 years is equal to 7 decades.

20 decades 2 centuries = 200 years 1 decade = 10 years 200/10 = 20

A decade is 10 years, so 2 is 20 years. In Greek " deca" means 10.