### Home > CALC > Chapter 11 > Lesson 11.2.4 > Problem 11-88

11-88.

Series I is a geometric series. What is the value of *r*?

Compare series II to the harmonic series.

For series III, use the Ratio Test.

11-88.

Series I is a geometric series. What is the value of *r*?

Compare series II to the harmonic series.

For series III, use the Ratio Test.