### Home > CCA2 > Chapter 10 > Lesson 10.3.1 > Problem 10-156

10-156.

Find the sum of the first six terms of the series 2 + 6 + 18 + 54 + ... Homework Help ✎

Find the common ratio.

Using *t*(*n*) = *a* · *r* ^{n}^{ − 1}, find *t*(6).

Now find the sum of the geometric series using: