1. The problem statement, all variables and given/known data I have two relatively similar problems: 1.) Sigma n=1 to infinity ((ln n)^3 / n^2) 2.) Sigma n=1 to infinity (1 / sqrt(n) * (ln n)^4) I'm to prove their convergence or divergence using either the direct comparison test or the limit comparison test. I understand both comparison tests, however, I am very much stumped on how to determine a working bn for the problems. 3. The attempt at a solution I've tried using a known p-series, such as 1/(n^2) for problem #1, which is convergent. However, that p-series is not greater than the an in this case. I'd appreciate any sort of direction on this.