I have the same problem. Shouldn’t the ratio be (2/3)^8? In the problem, both sequences start with 1
In the solution, however it is clear that the sequences start with 2 and 3 respectively

@energizedpanda Yeah, you're absolutely right! It needs to specify that 1 is the 0th term in order for (3/2)^9 to be correct. I'll go ahead and report that now!