Problem 4: For a given individual with age r, we know that ar = 4.2 and 07+19 = 9.5. The interest rate i = 0.05. The APV of a discrete 2-year certain and life annuity-due of 1 on this individual is 2 = 5.38. Compute the values r:2 and ex:16 [20 marks Problem 4: For a given individual with age r, we know that ar = 4.2 and 07+19 = 9.5. The interest rate i = 0.05. The APV of a discrete 2-year certain and life annuity-due of 1 on this individual is 2 = 5.38. Compute the values r:2 and ex:16 [20 marks