### Home > A2C > Chapter 12 > Lesson 12.4.1 > Problem 12-165

12-165.

Evaluate 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.