81, 27, 9, 3, . . .

Question

A. arithmetic, 0, –3, –6
B. geometic, 0, –3, –6
C. geometric, 1, one third, one over nine
D. The sequence is neither geometric nor arithmetic.

Answer 1

The sequence is geometric. The common ratio is 1/3.

So, the next term in the sequence would be 1.

Therefore, the answer is C. Geometric, 1, one third, one over nine.