20 number wikipedia - EAS
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20 is a pronic number. 20 is a tetrahedral number as 1, 4, 10, 20. 20 is the basis for vigesimal number systems. 20 is the third composite number to be the product of a squared prime and a prime, and also the second member of the (2 )q family in this form.20 is the smallest primitive abundant number. An … See more
20 (twenty; Roman numeral XX) is the natural number following 19 and preceding 21. A group of twenty units may also be referred to as a score. See more
• The atomic number of calcium.
• The third magic number in physics.
• The International Astronomical Union shower number for See more• Twenty20 is a form of limited overs cricket where each team plays only 20 overs.
• A standard dartboard is laid out as 20 sectors.
• The Kentucky Derby currently has a maximum field of 20 horses. See more• A 'score' is a group of 20 (often used in combination with a cardinal number, i.e. fourscore to mean 80), but also often used as an indefinite number (e.g. the newspaper headline … See more
• In many disciplines of developmental psychology, adulthood starts at age 20.
• Formerly the age of majority in Japan and in Japanese tradition. See moreWikipedia text under CC-BY-SA license 20 (number) - Wikipedia
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