Answer:
not geometric
Explanation:
A geometric series is one where the nth term is multiplied by a common ratio to get the n+1 term.
1 1/2 1/4 1/8 1/16 .....
is a geometric series. the fourth term (1/8) is multiplied by 1/2 to get 1/16.
The series you have been given is not geometric. It reduces to
1/3 1/4 1/5 1/6 which does not give you a common number to multiply the nth term to get to the n+1 term.