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List of numbers — Integers
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duo bi (from Latin) twi (Old English)
2 (two) (pronounced /ˈtuː/ ( listen)) is a number, numeral, and glyph. It is the natural number following 1 and preceding 3.
Contents
In mathematics
Two has many properties in mathematics.^{[1]} An integer is called even if it is divisible by 2. For integers written in a numeral system based on an even number, such as decimal and hexadecimal, divisibility by 2 is easily tested by merely looking at the last digit. If it is even, then the whole number is even. In particular, when written in the decimal system, all multiples of 2 will end in 0, 2, 4, 6, or 8.
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