Definition: It's a number used in mathematics to denote an infinite decimal expansion. Here are its definitions: - The first number in a series with infinitely many terms, denoted by 1. - The second number in a series with infinitely many terms, denoted by 2. - The third number in a series with infinitely many terms, denoted by 3. - And so on, with an infinite number of terms. In the context of mathematics and decimal expansions, "sn" is often used to denote an infinite sequence or series that contains at least one term. This can be used to represent arithmetic operations like multiplication or division as well as geometric operations such as addition or subtraction.
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