Toán Lớp 7: $C=\frac{\frac{1}{2}+\frac{1}{3}+\frac{1}{4}+…+\frac{1}{2012}}{\frac{2011}{1}+\frac{2010}{2}+\frac{2009}{3}+…+\frac{1}{2011}}$
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Toán Lớp 7: $C=\frac{\frac{1}{2}+\frac{1}{3}+\frac{1}{4}+…+\frac{1}{2012}}{\frac{2011}{1}+\frac{2010}{2}+\frac{2009}{3}+…+\frac{1}{2011}}$
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