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103

Part of 1975 Chisinau City MO

Problems(1)

Chisinau MO p103 1975 R2 VIII 1/2-1/3+1/4-...+1/1974 - 1/1975 <2/5

Source:

3/16/2021
Prove the inequality: 12−13+14−15+...+11974−11975<25\frac{1}{2}-\frac{1}{3}+\frac{1}{4}-\frac{1}{5}+...+\frac{1}{1974}-\frac{1}{1975}<\frac{2}{5}
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