Đặt \(A=\frac{1}{2}+\frac{3}{4}+\frac{7}{8}+.......+\frac{1023}{1024}\)
\(\Rightarrow2A=1+\frac{3}{2}+\frac{7}{4}+......+\frac{1023}{512}\)
\(\Rightarrow2A-A=1+1+1+.......+1-\frac{1023}{1024}\)
\(\Rightarrow A=10-\frac{1023}{1024}=\frac{9217}{1024}\)