Английская Википедия:80 (number)

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Версия от 14:10, 26 декабря 2023; EducationBot (обсуждение | вклад) (Новая страница: «{{Английская Википедия/Панель перехода}} {{pp|small=yes}} {{Infobox number | number = 80 | divisor = 1, 2, 4, 5, 8, 10, 16, 20, 40, 80 }} '''80''' ('''eighty''') is the natural number following 79 and preceding 81. == In mathematics == '''80''' is: * the sum of Euler's totient function φ(''x'') over the first sixteen integers. * a semiperfect number, since adding up some subsets...»)
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Шаблон:Pp Шаблон:Infobox number

80 (eighty) is the natural number following 79 and preceding 81.

In mathematics

80 is:

The Pareto principle (also known as the 80-20 rule) states that, for many events, roughly 80% of the effects come from 20% of the causes.[3][4]

Every solvable configuration of the 15 puzzle can be solved in no more than 80 single-tile moves.[5]

In science

Файл:Hg Mercury.jpg
Element 80: Mercury (Hg)

In religion

  • According to Exodus 7:7, Moses was 80 years old when he initially spoke to Pharaoh on behalf of his people. Today, 80 years of age is the upper age limit for cardinals to vote in papal elections.

In other fields

Eighty is also:

See also

References

  1. Шаблон:Cite web
  2. Шаблон:Cite web
  3. Шаблон:Cite journal.
  4. Шаблон:Cite web.
  5. A. Brüngger, A. Marzetta, K. Fukuda and J. Nievergelt, The parallel search bench ZRAM and its applications, Annals of Operations Research 90 (1999), pp. 45–63.

External links

Шаблон:Commons category

Шаблон:Integers