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43 / 109 Microsoft questions
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682. There are two doors leading out of a room: one leads to infinite riches, the other leads to a hungry dragon. Each door has a guard in front of it. You know that one guard always lies, while the other always tells the truth, but you don’t know which guard is which. You can ask one guard one question before you decide which door to open. What question do you ask?

Medium
StrategyAsked Feb 2026
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