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*Number of kingdoms in [[Five Dynasties and Ten Kingdoms Period]]
*Number of kingdoms in [[Five Dynasties and Ten Kingdoms Period]]
*House number of [[10 Downing Street]]
*House number of [[10 Downing Street]]
*The number of [[Provinces]] of [[Canada]]
*The designation of [[United States]] [[Interstate 10]], a freeway that runs from [[California]] to [[Florida]].
*The designation of [[United States]] [[Interstate 10]], a freeway that runs from [[California]] to [[Florida]].
*A Japanese comic: [[Ten (comic)]]
*A Japanese comic: [[Ten (comic)]]

Revision as of 22:11, 5 July 2006

10 (ten) is an even natural number following 9 and preceding 11.

For other uses of the number 10, see 10 (disambiguation).
For other uses of the ordinal 10th, see tenth.

Template:Numbers (10s)
Cardinal 10
ten
Ordinal 10th
tenth
Numeral system decimal
Factorization
Divisors 1, 2, 5, 10
Roman numeral X (Unicode: Ⅹ, ⅹ)
prefixes deca-/deka- (from Greek)

deci- (from Latin)

Binary 1010
Hexadecimal A
Hebrew י (Yod)

In mathematics

Ten is a composite number, its proper divisors being 1, 2 and 5. Ten is the smallest noncototient, a number that can not be expressed as the difference between any integer and the total of coprimes below it. Ten is a Harshad number and a semi-meandric number.

Ten is the sum of the first three prime numbers and also of the first four factorials. Ten squared equals 100. A polygon with ten sides is a decagon, and 10 is a decagonal number. But it is also a triangular number and a centered triangular number.

Ten is the number of n-Queens Problem solutions for n = 5.

In numeral systems

Ten is the base of the decimal numeral system, by far the most common system of denoting numbers in both spoken and written language. Ten is the first two-digit number in decimal and thus the lowest number where the position of a numeral affects its value. Any integer written in the decimal system can be multiplied by ten by adding a zero to the end (e.g. 855 * 10 = 8550). The reason for the choice of ten is assumed to be that humans have ten fingers (digits).

The digit '1' followed by '0' is how the value of p is written in base p. (E.g. 16 in hexadecimal is 10.)

The Roman numeral for ten is X (which looks like two V's [the Roman numeral for 5] put together); it is thought that the V for five is derived from an open hand (five digits displayed). The Chinese word numeral for ten is 十, which resembles a cross.

BaseNumeral system
1unary **********
2binary 1010
3ternary 101
4quaternary 22
5quinary 20
6senary 14
7septenary 13
8octal 12
9novenary 11
10decimal 10
over 10 (e.g., hexadecimal) A

In science

Astronomy

In money

In music

  • The interval of a major or minor tenth is an octave plus a major or minor third.
  • The title of quite a few albums, including recordings by Pearl Jam and LL Cool J. See Ten (album).

In religion

  • People traditionally tithed one tenth of their produce. The practice of tithing is still common in Christian churches today, though it is disputed in some circles as to whether or not it is required of Christians.
  • The number of Commandments from God to man in Mosaic law. (Exodus 20:2-17, Exodus 34:12-26, and Deuteronomy 5:6-21)
  • There are said to be ten "Lost Tribes" of Israel (those other than Judah and Benjamin).
  • There are ten sephiroth in the Tree of Life of Jewish mysticism.

In sports

In technology

In other fields

  • The number of theatrical Star Trek films that have been released so far.
  • A collection of ten items (most often ten years) is called a decade.
  • A decapod crustacean has ten limbs.
  • To reduce something by one-tenth is to decimate. (In ancient Rome, the killing of one in ten soldiers in a cohort was the punishment for cowardice or mutiny; or, one-tenth of the able-bodied men in a village as a form of retribution, thus causing a labor shortage and threat of starvation in agrarian societies.)
  • It takes ten to make a minyan.
  • With ten being the base of the decimal system, a scale of 1 to 10 is often used to rank things, as a smaller version of a 1-to-100 scale (as is used in percentages and wine-tasting).
  • Blake Edwards' 1979 movie 10.
  • Something that scores perfectly is "a perfect ten". A person who is attractive and physically flawless is often said to be "a ten", from the idea of ranking that person's appearance and sex-appeal on a 1-to-10 scale. For example, in the movie 10 Bo Derek is supposedly a "10" on that scale.
  • Counting from one to ten before speaking is often done in order to cool one's temper.
  • In astrology, Capricorn is the 10th astrological sign of the Zodiac.
  • In Chinese astrology, the 10 Heavenly Stems, refer to a cyclic number system that is used also for time reckoning.
  • The ordinal adjective is denary.
  • An online show hosted by Microsoft [1]
  • There is a practical joke where you ask someone to spell: "I-D-ten-T". It comes out looking like the word idiot: ID10T.

Ten is: