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  2. 20 (number) - Wikipedia

    en.wikipedia.org/wiki/20_(number)

    20 (twenty) is the natural number following 19 and preceding 21. A group of twenty units is sometimes referred to as a score. [1] [2] In Mathematics.

  3. 20 - Wikipedia

    en.wikipedia.org/wiki/20

    Twenty or 20 may refer to: 20 (number), the natural number following 19 and preceding 21; one of the years 20 BC, AD 20, 1920, 2020; Science.

  4. Vigesimal - Wikipedia

    en.wikipedia.org/wiki/Vigesimal

    For example, 20 altar, 40 alto-altar (2 times 20), 60 iski-altar (3 times 20) etc. In East Asia, the Ainu language also uses a counting system that is based around the number 20. "hotnep" is 20, "wanpe etu hotnep" (ten more until two twenties) is 30, "tu hotnep" (two twenties) is 40, "ashikne hotnep" (five twenties) is 100.

  5. Category:20 (number) - Wikipedia

    en.wikipedia.org/wiki/Category:20_(number)

    This page was last edited on 1 December 2024, at 08:31 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply.

  6. List of types of numbers - Wikipedia

    en.wikipedia.org/wiki/List_of_types_of_numbers

    Such a number is algebraic and can be expressed as the sum of a rational number and the square root of a rational number. Constructible number: A number representing a length that can be constructed using a compass and straightedge. Constructible numbers form a subfield of the field of algebraic numbers, and include the quadratic surds.

  7. 20 Number Ones - Wikipedia

    en.wikipedia.org/wiki/20_Number_Ones

    20 Number Ones is the first greatest hits album by American country singer Thomas Rhett. It was released through Valory on September 29, 2023. It is a compilation of his first 20 number-one country music singles, starting with " It Goes Like This " and presented in chronological order.

  8. List of numbers - Wikipedia, the free encyclopedia

    en.wikipedia.org/wiki/List_of_numbers

    A list of articles about numbers (not about numerals). Topics include powers of ten, notable integers, prime and cardinal numbers, and the myriad system.

  9. Number - Wikipedia

    en.wikipedia.org/wiki/Number

    A number is a mathematical object used to count, ... Maya arithmetic used base 4 and base 5 written as base 20. George I. Sánchez in 1961 reported a base 4, ...