Question:
Pointing to a photograph, a man said, "I have no brother or sister but that man's father is my father's son". Whose photograph was that?
Pointing to a photograph, a man said, "I have no brother or sister but that man's father is my father's son". Whose photograph was that?
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Draw three generation levels on paper before untangling the sentence: the father level, the speaker level, and a level below for anyone who turns out to be the speaker child. Work out which level the phrase describing the speaker without any siblings lands on first, then place the rest of the statement relative to that level.
Updated On: Sep 9, 2026
- His father's
- His own
- His son's
- His nephew's
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The Correct Option is C
Approach Solution - 1
“My father's son” = myself (as he has no brother).
So: “That man’s father is myself” ⇒ That man is my son.
Thus, the photograph is of his son.
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Approach Solution -2
Concept:
Step 1: Set up three generation levels.
Call the man in the photograph Person P, and the speaker Person S. Put the father of S on Level 1, put S on Level 2, and leave Level 3 open for anyone who turns out to be a child of S.
Step 2: Place the idea "a son of the father on Level 1" on the generation line.
The man making the statement says he has no siblings, so the father on Level 1 has exactly one son, and that son is S. This means "a son of the father on Level 1" points to Level 2, to S himself.
Step 3: Read the full statement using the generation levels.
The statement says the father of P is equal to "a son of the father on Level 1," and Step 2 shows that this phrase is S, so the father of P is S. A father sits one generation above his child, so P sits one level below S, on Level 3.
Step 4: Name the relation from the generation gap.
S is on Level 2 and P is on Level 3, directly one generation below S, and P is the child of S. Since P is male ("that man"), P is the son of S.
Final Answer: The photograph is of his son (option: His son).
- Blood relation puzzles are easier to track by numbering generations instead of swapping phrases one at a time.
- Placing every person on a generation line, parent generation above, child generation below, shows the answer directly once each phrase is pinned to a level.
Step 1: Set up three generation levels.
Call the man in the photograph Person P, and the speaker Person S. Put the father of S on Level 1, put S on Level 2, and leave Level 3 open for anyone who turns out to be a child of S.
Step 2: Place the idea "a son of the father on Level 1" on the generation line.
The man making the statement says he has no siblings, so the father on Level 1 has exactly one son, and that son is S. This means "a son of the father on Level 1" points to Level 2, to S himself.
Step 3: Read the full statement using the generation levels.
The statement says the father of P is equal to "a son of the father on Level 1," and Step 2 shows that this phrase is S, so the father of P is S. A father sits one generation above his child, so P sits one level below S, on Level 3.
Step 4: Name the relation from the generation gap.
S is on Level 2 and P is on Level 3, directly one generation below S, and P is the child of S. Since P is male ("that man"), P is the son of S.
Final Answer: The photograph is of his son (option: His son).
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