Determine if the sequence below is arithmetic or geometric and determine the common difference / ratio in simplest form.
125, comma, 25, comma, 5, comma, point, point, .
125,25,5,...
The sequence is geometric.
To determine the common ratio, we can divide each term by the previous term:
25 / 125 = 1/5
5 / 25 = 1/5
Therefore, the common ratio is 1/5 in simplest form.