Question

[do binh duc]

2/3 + 2/6 + 2/12 + 2 /24 + 2/48 + 2/96 + 2/192

Answer 1

[Nguyễn Ngọc Anh Minh]

Đặt BT trên là A

\(2A=\frac{4}{3}+\frac{2}{3}+\frac{2}{6}+\frac{2}{12}+\frac{2}{24}+\frac{2}{48}+\frac{2}{96}\)

\(A=2A-A=\frac{4}{3}-\frac{2}{192}=\frac{127}{192}\)

Answer 2

[Hùng Nguyễn]

Sai