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Number / From Wikipedia, the free encyclopedia

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0 (zero) is a number representing an empty quantity. In place-value notation such as the Hindu–Arabic numeral system, 0 also serves as a placeholder numerical digit, which works by multiplying digits to the left of 0 by the radix, usually by 10. As a number, 0 fulfills a central role in mathematics as the additive identity of the integers, real numbers, and other algebraic structures.

Quick facts: ← −1 0 1 → , Cardinal, Ordinal, Binary, Te...
−1 0 1
−1 0 1 2 3 4 5 6 7 8 9
Cardinal0, zero, "oh" (//), nought, naught, nil
OrdinalZeroth, noughth, 0th
Binary02
Ternary03
Senary06
Octal08
Duodecimal012
Hexadecimal016
Arabic, Kurdish, Persian, Sindhi, Urdu٠
Hindu Numerals
Chinese零, 〇
Khmer
Thai
Bangla
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Common names for the number 0 in English are zero, nought, naught (/nɔːt/), nil. In contexts where at least one adjacent digit distinguishes it from the letter O, the number is sometimes pronounced as oh or o (//). Informal or slang terms for 0 include zilch and zip. Historically, ought, aught (/ɔːt/), and cipher, have also been used.