1. Consider an annuity that pays £500 at the end of each year for 7 years. The annual effective interest rate is 4 % p.a. Compute the present value of this cashflow £ 数字 Enter an answer correct to 2 decimal places Compute the effective duration of this cashflow |数字 Enter an answer correct to 2 decimal places 2. A payment of £50 will be made in 10 years. The annual effective interest rate is 4% p.a. Compute the convexity of this payment 数字 Enter an answer correct to 2 decimal places