PrepTest 40, Section 1, Question 15
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.
If Toronto is the only city that is connected with Philadelphia, then which one of the following could be true?
Exactly one city is connected with Toronto.
Exactly one city is connected with Vancouver.
Exactly two cities are each connected with Honolulu.
Exactly two cities are each connected with Toronto.
Exactly four cities are each connected with Toronto.
Explanations
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