Pointing to a photograph, a man says, "I have no brothers or sisters, but the father of the person in the photograph is my father’s son." Who is the person in the photograph?
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For blood relation puzzles, carefully interpret the statements to identify relationships and eliminate options.
The man says, "The father of the person in the photograph is my father’s son." Since the man has no brothers or sisters, the only person who could be his father's son is himself. Therefore, the person in the photograph must be his son.