Which of the following are geometric sequences?
(check all that apply)
A. 2,-2,2,-2,2,-2,2
B. 1,4,9,16,25,36,49
C. 10,5,2.5,1.25,0.625,0.1325
D. 1,2,4,8,16,32
I believe its both A and D. A because your multiplying -1 each time to get the next answer and D because your multiplying by 2 each time to get the next number. Hope this helps :)
