Michael Fassbender
Narrator
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Learn about the history, properties, and meanings of the number 1, the first and smallest positive integer. Find out how 1 is represented in different numeral systems, languages, and fields of study.
Learn about the first natural number, its properties, and its uses in mathematics, computer science, and other fields. See how 1 is written and pronounced in different languages and numeral systems.
noun. the first and lowest whole number, being a cardinal number; unity. a symbol of this number, as 1 or I. a single person or thing: If only problems would come one at a time! a die face or a domino face having one pip. a one-dollar bill: to change a five-dollar bill for five ones.
Learn about the number 1, its history, properties, and uses in mathematics, science, religion, and culture. Find out how 1 is the fundamental unit of counting, the multiplicative identity, and the first figurate number of many kinds.
