For the game, see Billiards. In long scale usage: one billiard = 1,000,000,000,000,000 = 1015 = one short scale quadrillion. This word is not found, with the meaning of a number, in standard English dictionaries. In the United Kingdom, the Republic of Ireland, and Australia, the word "billiard" has been largely replaced by either the long scale usage of "thousand bill ...

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SI defines a number of SI prefixes to be used with the units: these combine with any unit name to give subdivisions and multiples. As an example, the prefix kilo denotes a multiple of a thousand, so the kilometre is 1000 metres, the kilogram is 1000 grams, a kilowatt is 1,000 watts, and so on. The prefix milli subdivides by a thousand, so a millimetre is one-thousandth of a metre (1000 millimetres in a metre), and a milli< ...

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SI defines a number of SI prefixes to be used with the units: these combine with any unit name to give subdivisions and multiples. As an example, the prefix kilo denotes a multiple of a thousand, so the kilometre is 1000 metres, the kilogram is 1000 grams, a kilowatt is 1,000 watts, and so on. The prefix milli subdivides by a thousand, so a millimetre is one-thousandth of a metre (1000 millimetres in a metre), and a milli< ...

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The symbol "K" is often used to mean a multiple of a thousand, so one may talk of "a 40K salary" (40,000), or the Y2K problem. Note that in these cases an upper case K is often used, although it should be noted that using an uppercase K is never correct when writing under the rules of the SI. Also, it is often used as a prefix to designate the binary prefix kilo = 210 = 1024. SI prefix - Non-SI units. Prefixes go back to the introduction of the metric system in the 1790s, lo ...

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Several prefixes have made appearances in popular culture, specifically in America, in one fashion or another which caused them to stand out. The original pronounciation of giga-watt was one such example, in the Back To The Future movies. This usage predated the common occurance of gigabytes and gigahertz in common American usage, but does not seem to have affected much the fact that Americans seem to prefer the hard G. Additionally, an American tape backup hardware company has been named Exabyte since well before it became pos ...

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Counting is the mathematical action of repeatedly adding (or subtracting) one, usually to find out how many objects there are or to set aside a desired number of objects (starting with one for the first object and proceeding with a one-to-one correspondence). However, counting is also used (primarily by children) to demonstrate knowledge of the number names and the number system. Counting sometimes involves numbers other than one -- for example, when counting money, or counting out change, or when "counting by twos" (2, 4, 6, 8, 10, 12, ...) or when "c ...

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The accepted English pronunciation of the initial G of giga was once soft, /ˈdʒaɪgə/ (like giant), but now the hard pronunciation, /ˈgɪgə/ (like giggle), is significantly more common. However, both pronunciations are likely to be understood by most English speakers, t ...

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Continuing backwards in the alphabet, after zetta and yotta, proposals for the next large number include xenta and xona (among others), the latter as an alteration of the Latin-derived numerical prefix nona-, and the next small number would also start with an x. Preserving the rule on abbreviating the prefixes (a Latin capital for the large number and a lower-case letter for the small number), even without consensus on the full name the following prefix symbols could be used without ambiguity: X, W, V, x, w, v. The logically next small prefix symbol, "u", is the accepted substitu ...

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The accepted English pronunciation of the initial G of giga was once soft, /ˈdʒaɪgə/ (like gigantic), but now the hard pronunciation, /ˈgɪgə/ (like giggle), is significantly more common. However, both pronunciations are likely to be understood by most English speakers, t ...

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SI prefix, SI prefix - Overview, SI prefix - Pronunciation, SI prefix - Use outside SI, SI prefix - Non-SI units, SI prefix - Computing, SI prefix - Proposed extensions, SI prefix - Popular Culture

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Several prefixes have made appearances in popular culture, specifically in America, in one fashion or another which caused them to stand out. The original pronounciation of giga-watt was one such example, in the Back To The Future movies. This usage predated the common occurance of gigabytes and gigahertz in common American usage, but does not seem to have affected much the fact that Americans seem to prefer the soft-G. Additionally, an American tape backup hardware company has been named Exabyte since well before it became pos ...

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SI prefix, SI prefix - Overview, SI prefix - Pronunciation, SI prefix - Use outside SI, SI prefix - Non-SI units, SI prefix - Computing, SI prefix - Proposed extensions, SI prefix - Popular Culture

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The symbol "K" is often used to mean a multiple of a thousand, so one may talk of "a 40K salary" (40,000), or the Y2K problem. Note that in these cases an upper case K is often used, although it should be noted that using an uppercase K is never correct when writing under the rules of the SI. Also, it is often used as a prefix to designate the binary prefix kilo = 210 = 1024. SI prefix - Non-SI units. Prefixes go back to the introduction of the metric system in the 1790s, lo ...

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Continuing backwards in the alphabet, after zetta and yotta, proposals for the next large number include xenta and xona (among others), the latter as an alteration of the Latin-derived numerical prefix nona-, and the next small number would also start with an x. Preserving the rule on abbreviating the prefixes (a Latin capital for the large number and a lower-case letter for the small number), even without consensus on the full name the following prefix symbols could be used without ambiguity: X, W, V, x, w, v. The logically next small prefix symbol, "u", is the accepted a substitu ...

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The simplest numeral system is the unary numeral system, in which every natural number is represented by a corresponding number of symbols. If the symbol ′ is chosen, for example, then the number seven would be represented by ′′′′′′′. The unary system is normally only useful for small numbers. It has some uses in theoretical computer science. Elias gamma coding is commonly used in da ...

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Japanese numerals - Large numbers. Following Chinese tradition, large numbers are created by grouping digits in myriads (every 10,000) rather than the Western thousands (1000): Examples: (spacing by groups of four digits is given only for clarity of explanation) 1`0000 : 一万 : ichi-man 983`6703 : 九百八十三万六千七百三 : kyū-hyaku hachi-jū san man, roku-sen nana-hyaku san 20`3652`1801 : 二十億三千六百五十二万千八百一 : ni-jū oku, s ...

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A simple algorithm for converting integers between positive-integer radices is repeated division by the target radix; the remainders give the "digits" starting at the least significant. E.g., 1020304 base 10 into base 7: 1020304 / 7 = 145757 r 5 145757 / 7 = 20822 r 3 20822 / 7 = 2974 r 4 2974 / 7 = 424 r 6 424 / 7 = 60 r 4 60 / 7 = 8 r 4 8 / 7 = 1 r 1 1 / 7 = 0 r 1 => 11446435 E.g., 10110111 base 2 into base 5: 10110111 / 101 = 100100 r 11 (3) 100100 / 101 = 111 r 1 (1) 111 / 101 = 1 r 10 (2 ...

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More general is using a notation (here written little-endian) like a0a1a2 for a0 + a1b1 + a2b1b2, etc. This is used in punycode, one aspect of which is the representation of a sequence of non-negative integers of arbitrary size in the form of a sequence without delimiters, of "digits" from a collection of 36: a-z and 0-9, representing 0-25 and 26-35 respectively. A digit lowe ...

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Also see Positional notation. In a positional base-b numeral system (with b a positive natural number known as the radix), b basic symbols (or digits) corresponding to the first b natural numbers including zero are used. To generate the rest of the numerals, the position of the symbol in the figure is used. The symbol in the last position has its own value, and as it moves to the left its value is multiplied by b. For example, in the decimal system (base 10), the numeral 4327 means (4×103) + (3×102) + (2×101 ...

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The base-10 system is the one most commonly used today. It is assumed to have originated because humans have ten fingers. A base-eight system was devised by the Yuki of Northern California, who used the spaces between the fingers to count. There is also linguistic evidence which suggests that the Bronze Age Proto-Indo Europeans (from whom most European and Indic languages descend) might have replaced a base 8 system (or a system which could only count up to 8) with a base 10 system. The evidence is that the word for 9, newan, a ...

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Tallies carved from wood and stone have been used since prehistoric times. Stone age cultures, including ancient American Indian groups, used tallies for gambling with horses, slaves, personal services and trade-goods. The earliest known written tallies appear in the ruins of the Sumerian empire, using clay tablets impressed with a sharp stick and baked. The Sumerians had quite an exotic system based on counts to 60, used in astronomical and other calculations. This system was imported and used by every Mediterranean nation that u ...

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There are two ways of writing the numbers in Japanese, in Arabic numerals (1, 2, 3) or in Chinese numerals (一, ニ, 三). The Arabic numerals are more often used in horizontal writing, and the Chinese numerals are more common in vertical writing. (Some numbers have multiple names.) * In modern Japanese, yaoyorozu means something more like "myriad", and is mainly found in set phrases. Historically, however, it simply meant 8 million. The numbers 4 and 9 are considered unlucky in Japanese: 4, pronounced shi ...

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