Question

Find the sum of the first 25 terms of a geometric sequence where the first term is 177,147 and the common ratio is .

Answer 1

Here's the relevant formula:

1 - r^n
nth partial sum = a* ------------
1 - r
1 - r^25
Here, the 25th partial sum is 177147 *-------------
1 - r

Unfortunately, you haven't yet shared the value of the common ratio. Find that value and substitute it for r in the above expression.