contestada

which of the following are geometric sequences?
A. 1,3,9,27,81
B. 10,5,2.5,1.25,0.625, 0.3125
C. 3,6,9,12,15,18
D. 5,10,20,40,80,160

Respuesta :

B. 10, 5, 2.5, 1.25, 0.625, 0.3125