Answer:
Arthimetic sequence
Explanation:
It is because the difference between 2 consecutive number is constant. In geometric series the difference between two numbers is the ratio between them.
Formula : tn=a+(n-1)d
a=1st term
n=nth term
d=difference
but in geometric sequence
formula: tn= ar^n-1
a=1st term
r=ration
n=nth term