Question

What is the r value of the following geometric sequence?
-81, 54, -36, 24,…

Answer 1

\[-81\times r=54\]
\[54\times r=-36\]
\[-36\times r=24\]
and so on. If there is indeed a common ratio \(r\), the solution to each equation should be the same.

Answer 2

my options are
-3/4
-5/6
-5/9
-2/3