Need help with 3. Please show calculations instead of using a table.

3. A perpetuity has payments of $1, $2, $1, $3, $1, $4, $1, $5, ... Payments are made at the end of each year. You may assume an annual effective interest rate of 5%. Determine the present value of this perpetuity. 4. Mary is to receive an annuity with 30 annual payments. The first payment of $1,000 is due immediately and each successive payment is 5% less than the payment for the preceding year. Interest is 11.38655152% compounded monthly. Determine the present value of the annuity