Q.4 Given the statements:
P is the sister of Q.
Q is the husband of R.
R is the mother of S.
T is the husband of P.
Based on the above information, T is ______ of S.
(A) the grandfather
(B) an uncle
(C) the father
(D) a brother
Solving the Family Relationship Puzzle
This is a classic blood relation reasoning question common in competitive exams like IIT JAM, bank POs, SSC, and logical reasoning tests. Let’s break it down step by step using the given statements to determine T’s relation to S.
-
P is the sister of Q.
P (female) and Q (male, as clarified later) are siblings—brother and sister. -
Q is the husband of R.
Q (male) is married to R (female). So, R is Q’s wife. -
R is the mother of S.
R has a child S. Since R is married to Q, Q is the father of S. Thus, S is the son/daughter of Q and R. -
T is the husband of P.
T (male) is married to P (female). So, T is P’s husband.
Now, mapping the family tree:
-
Q and P are brother-sister.
-
Q ↔ R (husband-wife), parents of S.
-
P ↔ T (husband-wife).
T is married to P, who is Q’s sister. Q is S’s father. Therefore, T is the brother-in-law of Q (S’s father), making T the uncle of S.
Correct Answer: (B) an uncle
Why Not the Other Options?
-
(A) the grandfather: Incorrect. Grandfather would be the father of S’s parent (Q or R). T is P’s husband, not a parent of Q/R.
-
(C) the father: Incorrect. S’s father is Q (R’s husband). T has no direct parental link to S.
-
(D) a brother: Incorrect. Brother would be S’s sibling. T is from the previous generation (married to aunt P).
Visual family tree:
Parents of P & Q (not mentioned)
|
---------------
| |
Q (father of S) P
↔ R (mother) ↔ T
|
S
T is uncle to S via marriage to P.
This article dives into the viral reasoning question: “P is sister of Q. Q is husband of R. R is mother of S. T is husband of P. T is ______ of S.” Perfect for students prepping for IIT JAM, SSC CGL, bank exams, or logical reasoning tests. We’ll solve it with a detailed family tree, explain every option, and share pro tips.
Step-by-Step Solution: “P is Sister of Q” Family Relations
Start with the clues:
-
P is the sister of Q: P (female) shares parents with Q (male).
-
Q is the husband of R: Q marries R (female).
-
R is the mother of S: R and Q are parents of S.
-
T is the husband of P: T (male) marries P.
Family Tree Diagram:
Q (S's father) ─ sister ─ P ─ husband ─ T (Uncle)
│
husband-wife
│
R (S's mother)
│
S (child)
Conclusion: T, as P’s husband, is the uncle of S. Q is S’s dad, P is Q’s sister (S’s aunt), so T is uncle by marriage.
Option Breakdown: Why Only “Uncle” Fits
| Option | Why Correct/Incorrect | Relation Match |
|---|---|---|
| (A) the grandfather | No. T isn’t parent of Q or R. | Wrong generation. |
| (B) an uncle ✅ | Yes. T = brother-in-law to Q (S’s dad). | Perfect match. |
| (C) the father | No. Father is Q. | Direct parent mismatch. |
| (D) a brother | No. T is adult, married—not S’s sibling. | Same generation error. |
Exam Tips for Blood Relation Questions Like “P is Sister of Q”
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Draw quick family trees—saves time!
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Assume genders from context (e.g., “husband” = male).
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Practice 10+ similar puzzles daily for IIT JAM/SSC speed.
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Common trap: Confusing uncle vs. father-in-law.
Mastering “P is sister of Q”-style questions boosts your reasoning score by 10-15%. Bookmark for exam prep!
