Suppose you are trying to decide what city to visit on your vacation.
Three friends give you advice by giving you their judgments of how
much they think you will like each city. They made their ratings on
a 1 to 10 scale in which 10 is the best and 1 is the worst.
You can only visit one city. For each pair of cities, which
one would you choose, given the advice you received from the three friends?