If the sequence is geometric, what is its common ratio?
¼ , 1, 4, 16, ...
A. 4
B. ¼
C. 3
D. not geometric

Question

If the sequence is geometric, what is its common ratio?
¼ , 1, 4, 16, ...
A. 		4
B. 		¼
C. 		3
D. 		not geometric

anonymous · Answer

Multiply by 4. Does that make it geometric? I'm not in geometry :O

mathmale · Answer

T:  Your job is to find the common ratio.  I believe we discussed a problem like this one a few minutes ago.

The first term is 1/4.  The second term is 1.  (1/4) times what common ratio results in 1?

If your response is correct, then the 2nd term (1) times the common ratio is 4.

Find the common ratio.