Chapter 15.1, Problem 39E

To determine

To calculate: The arrangement of a total of 21 voters in such a way that the plurality, pairwise comparison, Borda, and Hare methods all select candidate d by using the following table:

Number of Voters	Ranking
?	$\text{a}>\text{b}>\text{d}>\text{c}$
?	$\text{b}>\text{c}>\text{d}>\text{a}$
?	$\text{c}>\text{d}>\text{a}>\text{b}$
?	$\text{d}>\text{a}>\text{b}>\text{c}$
?	$\text{a}>\text{d}>\text{c}>\text{b}$