Question

The geometric sequence $3,6,12,24,48$ has common ratio, $r$ as

• A. $1$
• B. $2$
• C. $3$
• D. $4$

Answer 1

The correct option is B $2$

Given geometric sequence is $3,6,12,24,48$.

Common ratio $=$ $\frac{\text{second number}}{\text{first number}}$
$=$ $\frac{6}{3}=2$
So, the common ratio, $r$ is $2$.