- Quinary
Quinary (base-num|5) is a
numeral system with five as the base. This originates from the fivefinger s on eitherhand .In the quinary place system, five numerals from 0 to 4, are used to represent any
real number . According to this method, five is written as 10, twenty-five is written as 100 and sixty is written as 220.Usage
Many languages [Harald Hammarström, [http://www.cs.chalmers.se/~harald2/rara2006.pdf Rarities in Numeral Systems] : "Bases 5, 10, and 20 are omnipresent."] use quinary number systems, including
Gumatj , Nunggubuyu, [Citation
title=Facts and fallacies of aboriginal number systems
last=Harris
first=John
editor-last=Hargrave
editor-first=Susanne
pages=153-181
year=1982
journal=Work Papers of SIL-AAB Series B
volume=8
url=http://www1.aiatsis.gov.au/exhibitions/e_access/serial/m0029743_v_a.pdf] , Kuurn Kopan Noot [Dawson, J. " [http://books.google.com/books?id=OdEDAAAAMAAJ Australian Aborigines: The Languages and Customs of Several Tribes of Aborigines in the Western District of Victoria] (1881), p. xcviii.] andSaraveca . Of these, Gumatj is the only true "5-25" language known, in which 25 is the higher group of 5. The Gumatj numerals are shown below:A
decimal system with 5 as a sub-base is calledbiquinary , and is found in Wolof and Khmer. Avigesimal system with 5 as a sub-base is found inNahuatl and theMaya numerals .Roman numerals are a biquinary system. The numbers 1, 5, 10, and 50 are written as I, V, X, and L respectively. Eight is VIII and seventy is LXX.The Chinese and Japanese versions of the
abacus use a biquinary system to simulate a decimal system for ease of calculation.Urnfield culture numerals and sometally mark systems are also biquinary.References
ee also
*
Pentimal system External links
* [http://www.mathsisfun.com/numbers/convert-base.php?to=quinary Quinary Base Conversion] , includes fractional part, from
Math Is Fun
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