Question

What is the Geometric sequence of 256, 192,144, 108... Using the explicit formula

Answer 1

A = 256 ;
ar = 192 ;
r = 192 / 256 = 0.75 ;
ar^2 = 144;
r^2 = 144 / 256 = 0.5625 ;
r = $\sqrt{0.5625} =0.75$ ;
where r ≠ 0 is the common ratio and a is a  scale factor ;