Question

The sum to infinity of the series

1 + $\frac { 4 } { 5 }$ + $\frac { 7 } { 5 ^ { 2 } }$+ $\frac { 10 } { 5 ^ { 3 } }$+…… is

• A. $\frac { 16 } { 35 }$
• B. $\frac { 11 } { 8 }$
• C. $\frac { 35 } { 16 }$
• D. $\frac { 8 } { 6 }$

Answer 1

Answer: (C)

$\frac { 35 } { 16 }$

Answer 2

S_¥ = +