Question

Calculate the geometric mean of $3$ and $27$.

• A. $3$
• B. $6$
• C. $9$
• D. $12$

Answer 1

The correct option is C $9$

Geometric mean between $2$ numbers $a$ and $b$ can be given as $\sqrt{ab}$.

Here $a=3$ and $b=27$
Therefore, geometric mean $=$ $(3\times 27{)}^{0.5}=9$