Question 379877
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Hi,
this is an example of a Geometric Sequence, where the common raio is 3
For a Geometric Sequence {{{a[n] = a[1]*r^(n-1)}}}
Question States
{{{a[5] = a[1]*3^(5-1)=27}}}
{{{a[1]*3^(4)=27}}}
{{{a[1]=27/81 = 1/3}}}

CHECKING our answer by reviewing the first 5 terms of this sequence:
 1/3, 1, 3, 9, 27