Question

Determine if the sequence below is arithmetic or geometric and determine the

common difference / ratio in simplest form.
2, 10, 18, ...

Answer 1

Arithmetic sequence; common difference is 8.

Explanation:

An arithmetic sequence increases or decreases by a fixed amount from term-to-term.

10 - 2 = 8

18 - 10 = 8

The next term will be 18 + 8 = 26, and so on.