Final answer:
A geometric sequence is a sequence in which each term is found by multiplying the previous term by a constant.
Step-by-step explanation:
A geometric sequence is a sequence in which each term is found by multiplying the previous term by a constant. To determine if a given sequence is geometric, we start with the first term and see if each subsequent term is obtained by multiplying the previous term by the same constant.
For example, if we have the sequence 2, 4, 8, 16, ..., we can see that each term is obtained by multiplying the previous term by 2. Therefore, this sequence is geometric.
Another example is the sequence 3, 6, 12, 24, ..., where each term is obtained by multiplying the previous term by 2. This is also a geometric sequence.