Question: How is the girl in the photograph related to Kunal? Statements: I.…
2025
Question: How is the girl in the photograph related to Kunal?
Statements:
I. Pointing to the photograph, Kunal said, "She is the mother of my father's only granddaughter."
II. Kunal has no siblings.
III. Pointing to the photograph, Kunal said, "She is the only daughter-in-law of my mother."
- A.
Any two of the three
- B.
Only I and II
- C.
Only II and III
- D.
Either only III or only I and II
Attempted by 1 students.
Show answer & explanation
Correct answer: D
Concept: In a data-sufficiency blood-relation puzzle, a statement (alone or combined with another) is sufficient only when it pins down one single, unambiguous relation between the two people named in the question. If two different statements — or two different combinations — each independently pin down the very same relation through separate reasoning, the answer takes the ‘either/or’ form rather than naming one fixed combination.
Statement I alone: the girl is described as the mother of the father's only grandchild (through whichever of the father's children produced that grandchild) — this leaves more than one possibility open: she could be the wife of one of the father's sons (a daughter-in-law), or she could even be one of the father's own daughters (Kunal's sister) if that grandchild came through a daughter instead of a son. Without more, Statement I alone cannot fix a single relation to Kunal.
Statement II alone: it only states Kunal has no siblings and says nothing about the girl, so II alone cannot determine the relation.
Statements I and II together: since Kunal has no siblings, the father's only child is Kunal himself, so the father's only grandchild must be Kunal's own child — making the girl (that child's mother) Kunal's wife. I and II together are sufficient.
Statement III alone: the girl is the only daughter-in-law of Kunal's mother, i.e., the wife of the one married son among Kunal's mother's sons — within Kunal's own family this identifies her as Kunal's wife. III alone is sufficient.
Cross-check: pairing Statement II with III shows II adds nothing once III is used — III alone already fixes the wife relation, so ‘II and III’ is not a distinct sufficiency route. This confirms the two genuine independent routes are ‘I and II together’ and ‘III alone’, matching neither ‘any two’ nor a single fixed pair.
So the girl is Kunal's wife, established either by Statement III alone, or by Statements I and II together — the correct choice is ‘Either only III or only I and II’.