Indicate which rate and time period you would use in order to select the correct interest factor

Question:

Indicate which rate and time period you would use in order to select the correct interest factor for the following situations. In addition, indicate the interest factor that would be used.
a. Using PV of an Ordinary of $ 1 Table 7A. 5:

b. U sing FV of an Annuity Due of $ 1 Table 7A. 4:

Annuity
An annuity is a series of equal payment made at equal intervals during a period of time. In other words annuity is a contract between insurer and insurance company in which insurer make a lump-sum payment or a series of payment and, in return,...