Question

Which of these is a geometric sequence?

A. 2, 3, 5, 9, 17, ...
B. 2, 4, 6, 8, 10, ...
C. 3, 15, 75, 375, 1875, ...
D. 1/3 , 2, 3, 4, ...

Answer 1

Geometric sequence has a common ratio:

Option C.

Because: 15/3 = 75/15 = 375/75 = 1875/375 = 5

Answer 2

c is a geometric sequence. the terms share a ratio of 5