alleryOne of A–D broke a lock. A says “B did it”; B says “C did it”; C says “B’s claim is false”; D says “I did not”. Exactly one claim is true. Who did it?
AA
BD
CB
DC
Answer & Solution
Correct answer: B. D
If A or C did it, two claims are true; if B did it, three are true. If D did it, only C’s claim is true. Thus D broke the lock.
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