A painting in an old house changed every night. What could be the reason?
Category: Mystery · Difficulty: easy
Hint: Consider what could change with light.
Answer
It was painted with special ink that reacts to light.
Explanation
The ink used could be photosensitive, changing appearance at night.
This is an easy mystery riddle — a good one for children and beginners. The answer is It was painted with special ink that reacts to light..
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