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  2. Coins of the United States dollar - Wikipedia

    en.wikipedia.org/wiki/Coins_of_the_United_States...

    Twenty-cent piece: 20¢, 1875–1878; Silver dollar: $1.00, 1878–1904, 1921-28, 1934-1935; Gold dollar: $1.00, 1849–1889 (some early commemoratives were minted in this denomination) Quarter eagle: $2.50, 1792–1929 (some early commemoratives were minted in this denomination) Three-dollar piece: $3.00, 1854–1889

  3. Milky Way - Wikipedia

    en.wikipedia.org/wiki/Milky_Way

    In November 2013, astronomers reported, based on Kepler space mission data, that there could be as many as 40 billion Earth-sized planets orbiting in the habitable zones of Sun-like stars and red dwarfs within the Milky Way. [166] [167] [168] 11 billion of these estimated planets may be orbiting Sun-like stars. [169]

  4. One-cent coin - Wikipedia

    en.wikipedia.org/wiki/One-cent_coin

    A one-cent coin or one-cent piece is a small-value coin minted for various decimal currencies using the cent as their hundredth subdivision. Examples include: the United States one-cent coin, better known as the US penny; the Canadian one-cent piece, better known as the Canadian penny; the Australian one-cent coin; the New Zealand one-cent coin

  5. World population - Wikipedia

    en.wikipedia.org/wiki/World_population

    One of many independent mathematical models supports the lower estimate, [127] while a 2014 estimate forecasts between 9.3 and 12.6 billion in 2100, and continued growth thereafter. [ 128 ] [ 129 ] The 2019 Revision of the UN estimates gives the "medium variant" population as; nearly 8.6 billion in 2030, about 9.7 billion in 2050 and about 10.9 ...

  6. Penny (United States coin) - Wikipedia

    en.wikipedia.org/wiki/Penny_(United_States_coin)

    The penny, also known as the cent, is a coin in the United States representing one-hundredth of a dollar.It has been the lowest face-value physical unit of U.S. currency since the abolition of the half-cent in 1857 (the abstract mill, which has never been minted, equal to a tenth of a cent, continues to see limited use in the fields of taxation and finance).

  7. How Many Billionaires Are in the World? - AOL

    www.aol.com/finance/many-billionaires-world...

    Warren Buffett, $96.7 Billion. One of the most successful investors in history, Warren Buffett earned his fortune as the CEO of Berkshire Hathaway Inc. Still working, the 92-year-old has seen a ...

  8. List of circulating currencies - Wikipedia

    en.wikipedia.org/wiki/List_of_circulating_currencies

    Colour key and notes Indicates that a given currency is pegged to another currency (details) Italics indicates a state or territory with a low level of international recognition State or territory Currency Symbol [D] or Abbrev. ISO code Fractional unit Number to basic Abkhazia Abkhazian apsar [E] аҧ (none) (none) (none) Russian ruble ₽ RUB Kopeck 100 Afghanistan Afghan afghani ؋‎ AFN ...

  9. Large numbers - Wikipedia

    en.wikipedia.org/wiki/Large_numbers

    A standardized way of writing very large numbers allows them to be easily sorted in increasing order, and one can get a good idea of how much larger a number is than another one. To compare numbers in scientific notation, say 5×10 4 and 2×10 5, compare the exponents first, in this case 5 > 4, so 2×10 5 > 5×10 4.