To test the series for convergence, you can use the P-test. (You could also use the Integral Test, k=1 VK2 as is the case with all series of this type.) According to the P-test: 1 O converges k =1 K2 1 the P-test does not apply to k =1 VK2 O diverges k =1 / KZ 1 Now compute s5, the partial sum consisting of the first 5 terms of k =1 VK2 $5