# How do you determine whether the sequence #1/3, 2/3, 1, 4/3, 5/6,...# is arithmetic and if it is, what is the common difference?

##### 1 Answer

Oct 14, 2017

#### Explanation:

Concentrating on the first three values:

If a , b , c are in arithmetic sequence:

Then:

From example:

So:

The common difference is