Question

Determine if the sequence below is arithmetic or geometric and determine the common difference / ratio in simplest form.3,15,75,...This is______sequence and the______is equal to___.

Answer 1

Given

3, 15, 75, ....

Answer

It can be seen that

$\begin{gathered} \frac{15}{3}=5 \\ \frac{75}{15}=5 \end{gathered}$

This is geometric sequence and the common ratio is equal to 5