What is the geometric mean of the sequence 1, 3, 9, 27, 81,.... | Quantitative Aptitude | SolveeIt | Solveeit

Today, August 24

Question

What is the geometric mean of the sequence 1, 3, 9, 27, 81,... 3n?

A

$3^{\frac{n(n+1)}{2}}$

B

$3^{\frac{n}{2}}$

C

$3^{n}$

D

$3^{2n}$

E

$3^{n(n+1)}$

Answer

$3^{\frac{n}{2}}$

Explanation

Solution

The correct option is (B): $3^{\frac{n}{2}}$