Question

Help help please answer it

Answer 1

the geometric mean is

$\sqrt[n]{7 \times 7 {}^{2} \times 7 {}^{3} \times ........7 {}^{n} } \\ = \sqrt[n]{ 7 {}^{1 + 2 + 3 + 4 + ..... + n} } \\ = \sqrt[n]{7 {}^{ \frac{n(1 + n)}{2} } } \\ = 7 {}^{ \frac{n(1 + n)}{2} \times \frac{1}{n} } \\ = 7 {}^{ \frac{1 + n}{2} }$

option (a)

hope this helps u dear........

Answer 2

Hey!!

Option A is correct