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4 (four) is a number, numeral and digit. It is the natural number following 3 and preceding 5 . It is a square number , the smallest semiprime and composite number , and is considered unlucky in many East Asian cultures.
Quaternary / k w ə ˈ t ɜːr n ər i / is a numeral system with four as its base.It uses the digits 0, 1, 2, and 3 to represent any real number.Conversion from binary is straightforward.
An elevator control panel in a residential apartment building in Shanghai with no floor numbered as the 4th The number 4 missing in a parking lot in Japan. Tetraphobia (from Ancient Greek τετράς (tetrás) 'four' and Ancient Greek φόβος (phóbos) 'fear') is the practice of avoiding instances of the digit 4.
Four fours is a mathematical puzzle, the goal of which is to find the simplest mathematical expression for every whole number from 0 to some maximum, using only common mathematical symbols and the digit four.
Numeral or number prefixes are prefixes derived from numerals or occasionally other ... (2 parts, 3 parts, 4 parts) biped, quadruped, hexapod (animal with 2 feet, 4 ...
In arithmetic and algebra, the fourth power of a number n is the result of multiplying four instances of n together. So: ... 8707481 4 = 8332208 4 + 5507880 4 ...
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So too are the thousands, with the number of thousands followed by the word "thousand". The number one thousand may be written 1 000 or 1000 or 1,000; larger numbers are written for example 10 000 or 10,000 for ease of reading. European languages that use the comma as a decimal separator may correspondingly use the period as a thousands separator.