Answer
Neither arithmetic or geometric.
Work Step by Step
You have the sequence 1,2,3,5. You have to determine if it is an arithmetic or geometric sequence:
Arithmetic you have to find the common difference:
2-1=1
5-3=2
There is no common difference so this is not arithmetic.
Geometric you have to find the common ratio:
r=$\frac{2}{1}$=2
r=$\frac{5}{3}$=$\frac{3}{5}$
There is no common ratio. So the sequence is neither arithmetic or geometric.
