Pointing to a photo on the wall, Raju said, "His father's only granddaughter…
2023
Pointing to a photo on the wall, Raju said, "His father's only granddaughter is my wife." How is Raju related to the man in the photo?
- A.
nephew
- B.
son
- C.
son-in-law
- D.
none of these
Attempted by 3 students.
Show answer & explanation
Correct answer: C
Concept:
In blood-relation puzzles, a description like "X's father's granddaughter" is read through X's own line unless the puzzle explicitly names a sibling of X. Puzzle-setters introduce a sibling only when it matters to the answer, so with no sibling mentioned here, "his father's only granddaughter" refers to the granddaughter through the man in the photo himself, not through an unstated sibling.
Application:
Let M be the man in the photo.
M's father's granddaughter, read through M's own line (no sibling of M is mentioned), is M's daughter.
The statement calls this daughter Raju's wife, so Raju has married M's daughter.
A man who has married someone's daughter is that person's son-in-law, so Raju is the son-in-law of the man in the photo.
Cross-check:
Reversing the relation: the husband of M's daughter is M's son-in-law, which matches Raju and confirms the result.