Hmmm. I suspect a typo.
If the 5th term is greater than the 1st, then |r| > 1
But if the 1st term is greater than the 3rd, then |r| < 1
The fifth term of an exponential sequence (g.p)is greater than the first term by 13 and the half and the first term is greater than the third term by 9.find the common ratio and the first term
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