Math Problem Statement
この問題の解き方を計算の手順を含めて教えて
Solution
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Math Problem Analysis
Mathematical Concepts
Arithmetic Sequences
Series Summation
Formulas
Arithmetic sequence general term: a_n = a_1 + (n - 1) * d
Arithmetic series sum: S_n = n * (a_1 + a_n) / 2
Theorems
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Suitable Grade Level
High School
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