Question

what is the geometric mean of the sequence 1,3,9,27,81.....3powern
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Answer 1

Answer :

$= \frac{3}{1}$

$= \frac{9}{3}$

= 3

Explanation :

r = 3

a, ar, ar², ar³,................., ar${n}$ - 1

     a₂        a₃

r =   -    =     -

     a₁          a₂