\left. \begin{array} { l } { \text { ss } 6.4 \times 10 ^ { 5 } \text

1.	\left. \begin{array} { l } { \text { ss } 6.4 \times 10 ^ { 5 } \text { in usua } } \\ { \frac { 16 \times 2 ^ { n + 1 } - 8 \times 2 ^ { n } } { 16 \times 2 ^ { n + 2 } - 4 \times 2 ^ { n + 1 } } } \end{array} \right.
Answer» 16×2^n+1-8×2^n/16×2n+2-4×2^n+132^n+1-16^n/32^n+2-8^n+132^n-16^n/32^n-8^n+2+116^n/24^n+316/24+316/27 3/7 3/7

\left. \begin{array} { l } { \text { ss } 6.4 \times 10 ^ { 5 } \text { in usua } } \\ { \frac { 16 \times 2 ^ { n + 1 } - 8 \times 2 ^ { n } } { 16 \times 2 ^ { n + 2 } - 4 \times 2 ^ { n + 1 } } } \end{array} \right.

Answer»

16×2^n+1-8×2^n/16×2n+2-4×2^n+132^n+1-16^n/32^n+2-8^n+132^n-16^n/32^n-8^n+2+116^n/24^n+316/24+316/27

3/7