Question

What's the value of r (common ratio)

7, 21, 63, 189, ......
11)
A. 3
B. -3
C.
32
D.
Neither

Answer 1

`3`

Explanation:

`the \: common \: ratio \: is \: 3 \\ i.e \: (21)/(7) = (63)/(21) = (189)/(63) = 3`

Answer 2

The answer is A

I already wrote the steps and explanation in the image

Sorry for my broken English QAQ