Calculate the accumulated amount if RM500 is invested (a) at 4% p.a. effective for 10 years. (b) at 5% p.a. convertible quarterly for 6 years. (c) at 6% p.a. convertible half-yearly for 4 years. (d) at a force of interest of 4% p.a. for 5 years. (e) at a discount effective rate of 2% p.a. for 8 years. (f) at a discount rate of 4% p.a. convertible quarterly for 10 years. (g) at 4% p.a. effective for 10 years, 5% p.a. effective for 6 years and 3% p.a. effective for 4 years. (h) at a force of interest of 5% p.a. for 5 years, 4% p.a. effective for 5 years and followed by a discount rate of 4.5% p.a. for 5 years. (i) at a force of interest of 3% p.a. for 2 years followed by force of interest of 4% p.a. for 4 years and 4% p.a. convertible half-yearly for 5 years.