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  2. English numerals - Wikipedia

    en.wikipedia.org/wiki/English_numerals

    Americans may pronounce four-digit numbers with non-zero tens and ones as pairs of two-digit numbers without saying "hundred" and inserting "oh" for zero tens: "twenty-six fifty-nine" or "forty-one oh five".

  3. 25zero - Wikipedia

    en.wikipedia.org/wiki/25zero

    25zero is a mountaineering project, tracking equatorial glacial melt and raising awareness of the impacts of climate change, led by explorer [1] Tim Jarvis AM.The project was founded in 2014, and focussed on bringing live footage from the peaks of three mountain glaciers to the 37,000 delegates at the COP21 summit in 2015 [2] in Paris, France, as a way of showcasing the impact of global ...

  4. Maya numerals - Wikipedia

    en.wikipedia.org/wiki/Maya_numerals

    The Mayan numeral system was the system to represent numbers and calendar dates in the Maya civilization.It was a vigesimal (base-20) positional numeral system.The numerals are made up of three symbols: zero (a shell), [1] one (a dot) and five (a bar).

  5. Vigesimal - Wikipedia

    en.wikipedia.org/wiki/Vigesimal

    D0 20 is equivalent to two hundred and sixty in decimal = (13 × 20 1) + (0 × 20 0) 100 20 is equivalent to four hundred in decimal = (1 × 20 2) + (0 × 20 1) + (0 × 20 0). In the rest of this article below, numbers are expressed in decimal notation, unless specified otherwise. For example, 10 means ten, 20 means twenty. Numbers in vigesimal ...

  6. Numeral prefix - Wikipedia

    en.wikipedia.org/wiki/Numeral_prefix

    Numeral or number prefixes are prefixes derived from numerals or occasionally other numbers.In English and many other languages, they are used to coin numerous series of words.

  7. Curse of Tippecanoe - Wikipedia

    en.wikipedia.org/wiki/Curse_of_Tippecanoe

    William Henry Harrison, nicknamed Old Tippecanoe, died just a month after taking office in 1841.His death is the first attributed to the Curse of Tippecanoe. The Curse of Tippecanoe (also known as Tecumseh's Curse, the 20-year Curse [1] or the Zero Curse [2]) is an urban legend [3] about the deaths in office of presidents of the United States who were elected in years divisible by 20.

  8. Numeral (linguistics) - Wikipedia

    en.wikipedia.org/wiki/Numeral_(linguistics)

    One fortieth, twenty-five thousandths, [zero] point zero two five 0.02 ⁠ 1 / 50 ⁠ One fiftieth, two hundredths, [zero] point zero two 0.016 666... ⁠ 1 / 60 ⁠ One sixtieth 0.015625 ⁠ 1 / 64 ⁠ One sixty-fourth, ten thousand fifty six-hundred [and] twenty-five millionths, [zero] point zero one five six two five 0.012 345 679 012 345 ...

  9. Indian numbering system - Wikipedia

    en.wikipedia.org/wiki/Indian_numbering_system

    The most common of these was a vigesimal (base-20) numbering system with the main denomination called a bisi (see Hindustani number bīs), which corresponded to the land required to sow 20 nalis of seed. Consequently, its actual land measure varied based on the quality of the soil. [5] This system became the established norm in Kumaon by 1891.