Find the Partial Sum $S _ { 7 }$ Of the Geometric Sequence With

question 10

Essay

Find the partial sum $S _ { 7 }$ of the geometric sequence with $a = 3$ , $r = 2$ .

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Definitions:

Formal Reasoning

The process of thinking logically and methodically about abstract concepts, often using systems of rules.

Informal Reasoning

The process of thinking about something in a non-structured or non-formal way, often based on personal judgment or experience.

Algorithm

A set of rules or a step-by-step process designed to perform a specific task or solve a problem.

Randomly

Without method or conscious decision, in a way that appears unsystematic.