- 2 - Wikipedia
The number 2 is the second natural number, after 1 Each natural number, including 2, is constructed by succession, that is, by adding 1 to the previous natural number
- 2 (number) - New World Encyclopedia
The glyph currently used in the Western world to represent the number 2 traces its roots back to the Brahmin Indians, who wrote 2 as two horizontal lines (It is still written that way in modern Chinese and Japanese )
- 2 (number) - Simple English Wikipedia, the free encyclopedia
2 (Two; ˈtuː (listen)) is a number, numeral, and glyph It is the number after 1 (one), followed by 3 (three), then 4 (four) In Roman numerals, it is II
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- 2 - Wiktionary, the free dictionary
A West Arabic numeral, ultimately from Indic numerals (compare Devanagari २ (2)), from a cursive form of two lines to represent the number two See 2 § Evolution for more
- Number 2 - Curious Math Facts and Interesting Properties
Explore the hidden side of 2, the only even prime number Includes Prime Factorization, Divisors, Bases and Much More! A fascinating math reference for students, coders, scientists, puzzle-solvers, and anyone who enjoys numbers
- Superscript Two Symbol (²)
The superscript two, ², is used in mathematics to denote the square of a number or variable It also represents the second derivative in calculus when used as a notation for differentiation
- 2 -- from Wolfram MathWorld
The number two (2) is the second positive integer and the first prime number It is even, and is the only even prime (the primes other than 2 are called the odd primes) The number 2 is also equal to its factorial since 2!=2 A quantity taken to the power 2 is said to be squared
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