Quandaries
and Queries 

The first three terms of a geometric series are 3(q+5), 3(q+3), (q+7) respectively. Thankyou very much! 

Hi, The distinguishing feature of a geometric sequence is the common ratio, often designated r. The defining property is that if s and t are two successive terms in the sequence then
Thus the second term is r times the first term, and the third term is r times the second term. Hence for your sequence
and
From the first equation
and from the second equation
Thus
Solve for q. Penny 

