So there's no attached file or any sequence, but a geometric sequence can be identified by the way that the terms change. The formula for a geometric sequence is tn= t1* r^(n-1)
If the difference between terms is obtained through multiplication, it is a geometric sequence. For example:
2, 10, 50, 250... is a geometric sequence. The change, r, is 5.
However, the sequence 3, 11, 19, 27.... is not geometric, it is arithmetic because the change is obtained through subtraction.