Answer:
You can check the answer by yourself after seeing the below answer.
Step-by-step explanation:
A sequence is geometric only if has common ratio i.e. whiere a1,a2 and a3 are first,second and third term of the sequence respectively.
1) Common ratio
Explicit formula
Now using the above formula, we can find
2) Here
so this is not geometric sequence so no need to proceed further.
3) Common ratio
Explicit formula
Now using the above formula, we can find
4) Common ratio
Explicit formula
Now using the above formula, we can find
5)Common ratio
Explicit formula
Now using the above formula, we can find
6)Common ratio
Explicit formula
Now using the above formula, we can find