Answer:
geometric sequence
Step-by-step explanation:
The consecutive terms of an arithmetic sequence have a common difference d between them.
18 - 6 = 12
54 - 18 = 36
There is no common difference, thus not arithmetic
The consecutive terms of a geometric sequence have a common ratio r between them.
18 ÷ 6 = 3
54 ÷ 18 = 3
There is a common ratio, thus sequence is geometric
.
