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Sagan gave an example that if the entire volume of the observable universe is filled with fine dust particles roughly 1.5 micrometers in size (0.0015 millimeters), then the number of different combinations in which the particles could be arranged and numbered would be about one googolplex.
The Roman numerals, in particular, are directly derived from the Etruscan number symbols: 𐌠 , 𐌡 , 𐌢 , 𐌣 , and 𐌟 for 1, 5, 10, 50, and 100 (they had more symbols for larger numbers, but it is unknown which symbol represents which number). As in the basic Roman system, the Etruscans wrote the symbols that added to the desired ...
The Attic numerals were a decimal (base 10) system, like the older Egyptian and the later Etruscan, Roman, and Hindu-Arabic systems. Namely, the number to be represented was broken down into simple multiples (1 to 9) of powers of ten — units, tens, hundred, thousands, etc.. Then these parts were written down in sequence, in order of ...
100,000,000 ( one hundred million) is the natural number following 99,999,999 and preceding 100,000,001. In scientific notation, it is written as 10 8 . East Asian languages treat 100,000,000 as a counting unit, significant as the square of a myriad, also a counting unit.
Properties. A googol is approximately 70! ( factorial of 70). [a] Using an integral, binary numeral system, one would need 333 bits to represent a googol, i.e., 1 googol = ≈ 2 332.19280949. However, a googol is well within the maximum bounds of an IEEE 754 double-precision floating point type, but without full precision in the mantissa.
The currency sign was once a part of the Mac OS Roman character set, but Apple changed the symbol at that code point to the euro sign in Mac OS 8.5. In pre-Unicode Windows character sets ( Windows-1252 ), the generic currency sign was retained at 0xA4 and the euro sign was introduced as a new code point, at 0x80 in the little used (by Microsoft ...
This article is a list of standard proofreader's marks used to indicate and correct problems in a text. Marks come in two varieties, abbreviations and abstract symbols. These are usually handwritten on the paper containing the text. Symbols are interleaved in the text, while abbreviations may be placed in a margin with an arrow pointing to the ...
Dimes, quarters, and half-dollars minted before 1965 will be 90% silver. Half dollars from 1965-1970 will be 40% silver. Nickels minted from 1942-1945 are 35% silver and are known as war nickels ...