Question 377686
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Hi,
The First and Fourth terms of a geometric sequence are 5 and 135
Note: for a geometric series: {{{a[n] = a[1]*r^(n-1)}}}
{{{a[4] = a[1]*r^(4-1)}}}
{{{a[4] = a[1]*r^3}}}
135 = 5*r^3
27 = r^3
3 = r