Answer the following questions:

a. Present value of \($1,000,000\) to be received in eight years at a discount rate of 10 percent.

b. Present value of the following series of cash payments: \($10,000\) to be received in one year, \($20,000\) in two years, and \($30,000\) in three years, at a discount rate of 8 percent.

c. Present value of the following series of cash payments: \($30,000\) to be received in one year, \($20,000\) in two years, and \($10,000\) in three years, at a discount rate of 8 percent.