A score is 20 years.
The year 1981, as with every year between 1901 and 2000, is in the twentieth century.
The US Constitution decrees that the term of a President always begins and ends at noon on the twentieth day of January every four years.After October 15th, 1933, (which was when Section 1 of the Twentieth Amendment to the Constitution of the United States of America became effective), the term of office of every prospective President who did not die or resign while in office ended at noon on the twentieth day of January of the same year their respective terms would have ended notwithstanding the Twentieth Amendment.To view a transcript of the Constitution of the United States of America, please click on the related link from the website of the National Archives.
A publication that's published every two months is a bi-monthly. That would be six issues per year. There was some abiguity in the past with the term sometimes being used to mean both twice a month and every two months. There was a gradual shift in the late twentieth century to that term being used to indicate every two months.
Per cent means "for every hundred" so if you have 1 for every 20 (one twentieth) then you have 5 for every 100...five one hundredths, or five percent.
Senators serve a six year term.
quinquennial
every 4yrs is a leap year
1700-1799ad
its is the year of the horse. on the twentieth sunday.
The twentieth century officially ended on December 31, 2000.
A Cigarette Girl or Cocktail Waitress
The nth term is 2n So the 20th term is 2 x 20 = 40.