Problem: Tirpitz was sunk on November 1944 during Operation Catechism by bombers from Number 9 Squadron and which other numbered squadron, well known from Operation Chastise the previous year?
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A: 617

Problem: The human gastrocolic reflex typically prompts someone to visit the?
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A: toilet

Problem: In what year did the airship Graf Zeppelin complete the first round-the-world flight in September, and inaugurate the first commercial transatlantic service in October?
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A: 1929

Problem: Gramophone records are made of, and sometimes called, what popular name for the polymer material in question?
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A:
vinyl