3. The following payments are made under an annuity: 10 at the end of the fifth year. 9 the end of the sixth year, decreasing by 1 each year until nothing is paid. Show that the present value is 10-aa aa (1-10i) 3. The following payments are made under an annuity: 10 at the end of the fifth year. 9 the end of the sixth year, decreasing by 1 each year until nothing is paid. Show that the present value is 10-aa aa (1-10i)