Question

determine whether the following sequence is geometric. If so, find the common ratio.
3, 15, 75, 375

Answer 1

This sequence is geometric and the common ratio is 5.
You can tell that it is not arithmetic because there is not a common difference between each number (75-15=60, 15-3=12). You can find the common difference by dividing any term by the term that case before it. So for example 15/3=5 or 75/15=5.

Hope this helps!