35.C. Discuss the convergence or the divergence of the series with nth term (for sufficiently large n) given by
(a) $\left[\log n\right]^r$,
(c) $\left[\log n\right]^{-r}$,
(e) $\left[n \log n\right]^{-1}$,
(b) $\left[\log n\right]^{-r}$,
(d) $\left[\log n\right]^{-\log \log n}$,
(f) $\left[n\left(\log n\right)\left(\log \log n\right)^2\right]^{-1}$