The Family Puzzle

A man looks at a painting in a museum and says, “Brothers and sisters I have none, but that man’s father is my father’s son.”
Who is in the painting?

The man’s son.

  • The man says, “That man’s father is my father’s son.”
  • Since he has no brothers or sisters, “my father’s son” must be himself.
  • Therefore, “that man’s father” is him, which means that man in the painting is his son.
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