Question 426144
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Hi
The second term of a geometric series is 24 and the fifth term is 3
Geometric
{{{a[n] = a[1]*r^(n-1)}}}
{{{a[2] = a[1]*r = 24}}}  {{{a[1] = 24/r}}}
a[5] = (24/r)r^4 = 3 
           r^3 = 1/8
           r = 1/2   {{{a[1] = 48}}}
{{{sum( a[n], n=1, infinity )}}} = {{{a[1]/(1-r)}}} = 48/1/2 = 96