# How do you find the common ratio for #64,-32,16,-8,4,...#?

##### 2 Answers

Sep 21, 2016

Common ratio is

#### Explanation:

In a Geometric series, common ratio is the ratio of a term with respect to its preceding term.

Here we have the series

and hence common ratio is

Sep 21, 2016

Common ratio:

#### Explanation:

Let the ratio between successive terms

Then for the given terms:

assuming this pattern holds for subsequent (unspecified) terms,

we can see that there is a common ration of