A security guard hears a silent alarm go off but sees no signs of trouble. What could have triggered it?
Category: Mystery · Difficulty: easy
Hint: Think about unexpected movements.
Answer
A cat knocked over a sensor.
Explanation
The cat's action could easily trigger a silent alarm without any human involvement.
This is an easy mystery riddle — a good one for children and beginners. The answer is A cat knocked over a sensor..
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