Question

Which of these is a geometric sequence?

4,2,1, , ....
3,6,9,12,...
3, -15,-33, -51,-69,...
2,3,5,9,17,...

Answer 1

Answer:4,2,1,1/2,1/4

Step-by-step explanation:the other guy was wrong (for aP exusers) heres the answer that was right for me