QUESTION 4 For each of the following infinite series, answer questions (a) to (d): 20 1 -n- 1 a) Write the first five terms of the series in the form " + + + + b) Is the series geometric? If so, what is the ratio? Or, why is it not geometric? c) If the series is geometric, decide whether it is convergent based on its ratio. d) If the series is convergent, show the calculations to find its value. Answer " the value of the series is