# Number
|  | A **Number** is a mathematical object used to count, measure, and label. The original examples are the natural numbers 1, 2, 3, 4, and so forth. Numbers can be represented in language with number words. More universally, individual numbers can be represented by symbols, called numerals; for example, "5" is a numeral that represents the number five. As only a relatively small number of symbols can be memorized, basic numerals are commonly organized in a numeral system, which is an organized way to represent any number. The most common numeral system is the Hindu–Arabic numeral system, which allows for the representation of any non-negative integer using a combination of ten fundamental numeric symbols, called digits. In addition to their use in counting and measuring, numerals are often used for labels, for ordering, and for codes. In common usage, a numeral is not clearly distinguished from the number that it represents. |
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| | wikipedia:: [Number](https://en.wikipedia.org/wiki/Number) |
| | [Numeral system - Wikipedia](https://en.wikipedia.org/wiki/Numeral_system) |
| | [Numeral (linguistics) - Wikipedia](https://en.wikipedia.org/wiki/Numeral_(linguistics)) |
| | [Numerical digit - Wikipedia](https://en.wikipedia.org/wiki/Numerical_digit) |
[[Decimal|Decimal notation]]
[[Complex number]]
[[Binary numeral system|Binary number]]
[[Magic Number]]
[[Prime Number]]
[[Natural Number]]
[[Rational number]]
[[Cardinal number]]
[[Tuple]]
[[Imaginary number]]
[[Real number]]
[[Cardinal numeral]]
[[Ordinal numeral]]
[[Roman numeral system]]
[[Fibonnaci Number]]
[[Irrational number]]
[[Triangular Numbers]]
[[Hindu–Arabic numeral system]]
[[Superior highly composite number]]
## Terms and words for numbers
- 0
- [[Zero]]
- zilch
- nada
- nothing
- null
- void
- [[1#Terms]]
- ![[1#Terms]]
- [[Dualism|2]]
- Two
- binary
- secondary
- double
- twin
- pair
- duet
- duplicate
- bit
- binomial
- boolean
- dichotomy
- Dyad
- bi
- di?
- [[3]]
- Three
- ternary
- tertiary
- third
- triple
- triplet
- triplicate
- trinomial
- trichotomy
- trinity
- triad
- tri
- [[4]]
- Four
- quarter
- quaternary
- Tetrad
- Many
- poly
- groups, sequences
- Secondary, ternary, quaternary...
- Tertiary
- Dichotomy, Trichotomy
- Other
- 5
- quinary
- quintet
- pentad
- base 5
- pent...
- 6
- Hex
- Hexad
- Hexagon
- Sextet
- 7
- Sep
- septenary
- septuple
- septuplicate
- Hebdomad
- means 7
- as in 7 days a week
- Heptad
- 8
- Octad
- Octet
- Octagon
- 9
- Ennead
- Aeneid?
- 10
- Decad
- Decade