2 - Wikipedia 2 (two) is a number, numeral and digit It is the natural number following 1 and preceding 3 It is the smallest and the only even prime number Because it forms the basis of a duality, it has religious and spiritual significance in many cultures The number 2 is the second natural number, after 1
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 - 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
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
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
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