PrepTest 40, Section 1, Question 14
Each nonstop flight offered by Zephyr Airlines departs from one and arrives at another of five cities: Honolulu, Montreal, Philadelphia, Toronto, and Vancouver. Any two cities are said to be connected with each other if Zephyr offers nonstop flights between them. Each city is connected with at least one other city. The following conditions govern Zephyr's nonstop flights:
Each nonstop flight offered by Zephyr Airlines departs from one and arrives at another of five cities: Honolulu, Montreal, Philadelphia, Toronto, and Vancouver. Any two cities are said to be connected with each other if Zephyr offers nonstop flights between them. Each city is connected with at least one other city. The following conditions govern Zephyr's nonstop flights:
Each nonstop flight offered by Zephyr Airlines departs from one and arrives at another of five cities: Honolulu, Montreal, Philadelphia, Toronto, and Vancouver. Any two cities are said to be connected with each other if Zephyr offers nonstop flights between them. Each city is connected with at least one other city. The following conditions govern Zephyr's nonstop flights:
Each nonstop flight offered by Zephyr Airlines departs from one and arrives at another of five cities: Honolulu, Montreal, Philadelphia, Toronto, and Vancouver. Any two cities are said to be connected with each other if Zephyr offers nonstop flights between them. Each city is connected with at least one other city. The following conditions govern Zephyr's nonstop flights:
Montreal is connected with exactly one other city.
Honolulu is not connected with Toronto.
Any city that is connected with Honolulu is also connected with Toronto.
If Philadelphia is connected with Toronto, then Philadelphia is not connected with Vancouver.
Which one of the following could be true?
Montreal and Philadelphia are connected with each other, but neither is connected with any other city.
Montreal and Toronto are connected with each other, but neither is connected with any other city.
Philadelphia and Toronto are connected with each other, but neither is connected with any other city.
Philadelphia and Vancouver are connected with each other, but neither is connected with any other city.
Toronto and Vancouver are connected with each other, but neither is connected with any other city.
Explanations
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