Question

10 p What is the common ratio for the following geometric sequence? 640, 160.40.10....​

Answer 1

r =
`(1)/(4)`

Explanation:

The common ratio (r) of a geometric sequence is the ratio of any term divided by the previous term , then

r =
`(a_(2) )/(a_(1) )` =
`(160)/(640)` =
`(1)/(4)`