# Is 3, 6, 9, 12 ,15, 18 a geometric sequence?

##### 1 Answer

Dec 16, 2015

No, it's an arithmetic sequence with initial term

#### Explanation:

A geometric sequence has a common ratio between terms.

An arithmetic sequence has a common difference between terms.

If a sequence of Real numbers is both a geometric sequence and an arithmetic sequence then it is constant.

Note I say Real numbers. The sequence