How many different pairwise comparisons are needed to learn the outcome of an election involving n = 5 candidates?
A)30
B)40
C)10
D)20

Name: How many different pairwise comparisons are needed to learn the outcome of an election involving n = 5 candidates? A)30 B)40 C)10 D)20
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Question

Quizplus · Accepted Answer

To learn the outcome of an election involving n candidates, you need to make n(n-1)/2 pairwise comparisons. For n = 5, this is 5(5-1)/2 = 20/2 = 10 comparisons.

How Many Different Pairwise Comparisons Are Needed to Learn the Outcome