Sometimes a family phrase looks like a maze only because we read it too quickly. This riddle hides nothing: you only have to translate each relationship without adding relatives who do not exist.
The Photo with No Siblings
Riddle statement
A man looks at a photograph and says:
“I have no brothers or sisters.
But the father of the person in the photo is the son of my father.”
Who is in the photograph?
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Solution
The key sentence is:
“The father of the person in the photo is the son of my father.”
But the man has said that he has no brothers or sisters.
Therefore, the only possible “son of my father” is the man himself.
So the sentence means:
“The father of the person in the photo is me.”
Therefore, the person in the photo is his son or daughter.
Answer: the photo shows his son or daughter.