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Help, please! I need help quickly...
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Help, please! I need help quickly...

Help, please! I need help quickly...-example-1
User Tutul
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1 Answer

4 votes

The sum telescopes to

(1 - 1/3) + (1/3 - 1/5) + ... + (1/199 - 1/201) = 1 - 1/201 = 200/201.

User Vitalii Velikodnyi
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