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