Determine if a sequence is geometric or not

The video tutorial explains how to determine if a sequence is geometric by using the definition and checking the ratio of consecutive terms. It provides an example with four terms, showing the calculation of ratios and their simplification to confirm the sequence is geometric. The tutorial concludes by affirming the sequence type based on consistent ratios.

Calculate the ratio of the terms 36, 12 and 108, 36. What do you observe?

Explain why the sequence 12, 36, 108, 324 is a geometric sequence.