### Home > CCA2 > Chapter 10 > Lesson 10.3.1 > Problem 10-148

10-148.

Find the sum for each of these infinite geometric series if possible. If it is not possible, explain. Homework Help ✎

8 + 4 + 2 + ...

3 + 9 + 27 + 81 + ...

Find the common ratio.

Use the equation for an infinite geometric series:

16

See part (a).

Not possible. r > 1, and the terms keep increasing.