Chapter 7: Q.2 (page 631)
a) As p- series you could use as a comparison to show that the series converges.
b) As a p- series you could use a comparison to show that the series diverges.
c) A p series other than you could use with comparison test to show that the series converges.
Short Answer
a) It is convergent
b) It is divergent
c) it is convergent