Question

Is the following sequence arithmetic? if so, identify the common difference. 8, 5, 3, 2,...

Answer 1

From the sequence given:
8,5,3,2...
The difference between consecutive numbers is:
5-8=-3
3-5=-2
2-3=-1
The difference is not the same thus we can't call them common difference, we therefore conclude that the sequence is not arithmetic sequence.