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nguyentan2009a
2 năm trước
Cho; A=$\frac{1}{1011}$.(1+$\frac{1}{3}$+ $\frac{1}{5}$+...+$\frac{1}{2019)}$ B=$\frac{1}{1010}$.($\frac{1}{2}$+ $\frac{1}{4}$+$\frac{1}{6}$ +...+$\frac{1}{2020)}$ Hãy so sánh A và B.
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