A family consists of five members: P, Q, R, S and T. T has two sons, an…
2026
A family consists of five members: P, Q, R, S and T. T has two sons, an unmarried daughter and a daughter-in-law. P is the brother-in-law of above-mentioned daughter-in-law. Q’s sister is not happy with Q’s wife. But P and his father support Q’s wife S. Who is T’s daughter?
- A.
R
- B.
P
- C.
S
- D.
Q
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Show answer & explanation
Correct answer: A
Concept. In a blood-relations puzzle, fix each person's role and gender using the explicit kinship terms before naming anyone. A daughter-in-law is the wife of a son; a brother-in-law of a married woman is (most directly) her husband's brother; and a possessive like “his father” marks that person as male. Pin every role, then read off the one role nobody else has filled.
Apply this to the five members P, Q, R, S, T:
S is stated to be Q’s wife. Since T’s family contains exactly one daughter-in-law (the wife of a son), S is that daughter-in-law and Q is one of T’s two sons.
P is the brother-in-law of the daughter-in-law S. The consistent reading is that P is the brother of S’s husband Q, so P is T’s second son. The phrase “P and his father” also marks P as male, confirming P is a son, not the daughter.
T’s people are now: two sons (P, Q), one daughter-in-law (S), and one unmarried daughter still unnamed. The only member left is R.
So R is the unmarried daughter of T. This matches “Q’s sister is not happy with Q’s wife”: Q’s sister is the unmarried daughter R, unhappy with S.
Cross-check. Counting roles: P (son), Q (son), S (daughter-in-law), T (parent), R (daughter) uses each of the five members exactly once with no role doubled or missing. T’s daughter is R.