12./Which test could be used to show that the series Snconverges? (a) Geometric Series Test (b) p-Series Test (e) None of these (c) Integral Test (d) Limit Comparison Test 13. Investigate the series n5 or convergence or divergence (a) Converges by nth-Term Test for Divergence (c) Converges by Root Test (e) None of these (b) Diverges by nth-Term Test for Divergence (d) Converges by Limit Comparison Test 4. Determine the convergence or divergence of the following series, and state the test used: