\(\frac{1}{11}+\frac{2}{11}+\frac{3}{11}+\frac{4}{11}+.............+\frac{10}{11}\)
\(=5\)
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\(\frac{1}{11}+\frac{2}{11}+\frac{3}{11}+\frac{4}{11}+.............+\frac{10}{11}\)
\(=5\)
k mk nhecam ơn nhiu