Difference between revisions of "Number"
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| − | A '''number''' is a term that describes the amount of something. | + | A '''number''' is a term that describes the amount of something and is used for counting of measuring. |
Numbers are usually represented in [[English]] writing by a system of ''numerals'': | Numbers are usually represented in [[English]] writing by a system of ''numerals'': | ||
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Which can be used in combination to represent any number of any size. An older system of representation, still sometime encountered on clocks and other places, is [[Roman numeral]]s, which used certain letters of the [[alphabet]] instead. | Which can be used in combination to represent any number of any size. An older system of representation, still sometime encountered on clocks and other places, is [[Roman numeral]]s, which used certain letters of the [[alphabet]] instead. | ||
| + | There are many kinds of numbers. Some examples are: | ||
| + | *[[Prime number]]s | ||
| + | *[[Composite number]]s | ||
| + | *[[Rational number]]s | ||
| + | *[[Real number]]s | ||
| + | *[[Imaginary number]]s | ||
| + | *[[Complex number]]s | ||
| + | *[[Transcendental number]]s | ||
| + | |||
[[Category:Mathematics]] | [[Category:Mathematics]] | ||
Revision as of 10:37, January 20, 2008
A number is a term that describes the amount of something and is used for counting of measuring.
Numbers are usually represented in English writing by a system of numerals:
- 0 (zero)
- 1 (one)
- 2 (two)
- 3 (three)
- 4 (four)
- 5 (five)
- 6 (six)
- 7 (seven)
- 8 (eight)
- 9 (nine)
Which can be used in combination to represent any number of any size. An older system of representation, still sometime encountered on clocks and other places, is Roman numerals, which used certain letters of the alphabet instead.
There are many kinds of numbers. Some examples are:
