# What is a Geometric Series?

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A geometric series is a series of numbers where each term after the first is found by multiplying the previous term by a fixed, non-zero number called the common ratio. The formula for the nth term of a geometric series is given by (a_n = a_1 \times r^{(n-1)}), where (a_n) is the nth term, (a_1) is the first term, (r) is the common ratio, and (n) is the term number.

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