Question

Find the common ratio for this geometric sequence. 0.25, 1.25, 6.25, 31.25, ...

Answer 1

Given data:

The given geometric series is 0.25, 1.25, 6.25, 31.25, ...​

The expression for the common ratio is,

$\begin{gathered} r=\frac{1.25}{0.25} \\ =5 \end{gathered}$

Thus, the common ratio is 5, so first option is correct.