Problem: The shortest Greenland-to-Iceland sea-crossing is about how many miles?
Answer: 180

Problem: Which Gilbert and Sullivan opera has the alternate title 'The Peer and the Peri'?
Answer: iolanthe

Problem: From where can you check out, but never leave?
Answer: hotel california

Problem: The world's oldest emergency call service was introduced first in the London area in 1937. What telephone number was used?
Answer:
999