Question

$4GM$ are insested between $3$ and $729$ then the $3^{\circ }GM$ is

• A. $27\sqrt{3}$
• B. 27
• C. 81
• D. 243

Answer 1

Answer: (A)

Let $G_1,G_2,G_3,G_4$, are 4 GM’s between 3 and $729$
$\Rightarrow r={\left(\frac{729}{3}\right)}^{1/5}=3$
$\Rightarrow G_3=3(r{)}^3=81$