| Exam Board | Edexcel |
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| Module | AEA (Advanced Extension Award) |
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| Year | 2008 |
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| Session | June |
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| Topic | Arithmetic Sequences and Series |
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1．The first and second terms of an arithmetic series are 200 and 197.5 respectively．
The sum to \(n\) terms of the series is \(S _ { n }\) ．
Find the largest positive value of \(S _ { n }\) ．