Question

What is the r value of the following geometric sequence?
40, 20, 10, 5,…

Answer 1

We're essentially multiplying by 1/2 everytime. So r value(ratio) is 1/2 or 0.5

Answer 2

Can you do the others?

Answer 3

You can also do it like the current term over the previous term.

\(\Large \color{Black}{\Rightarrow {20 \over 40} = {1 \over 2} }\)

Answer 4

thanksss! :)