# How do you tell whether the sequence #1, 2, 4, 7, 11# is arithmetic?

##### 1 Answer

Mar 31, 2017

It is not an arithmetic sequence.

#### Explanation:

In an arithmetic sequence, **the difference between a term and its immediately preceding term is always same**.

Let use see here,

Here **the difference** is continuously increasing

Hence, it is not an arithmetic sequence.

Note: In an geometric sequence, the ratio of a term to its immediately preceding term is always same. This is not the case here as