At a crime scene, sounds were heard echoing though the room was soundproof. What explained this odd phenomenon?
Category: Mystery · Difficulty: easy
Hint: Think about artificial sources of sound in silent places
Answer
A hidden speaker played recordings
Explanation
A concealed device can create sounds that seem like echoes unexpectedly.
This is an easy mystery riddle — a good one for children and beginners. The answer is A hidden speaker played recordings.
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