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Question

R is the father of O. O is the wife of A. A is the brother of S. S is the daughter of T. How is R related to T?

This question was previously asked in
RRB NTPC 2024 CBT 1 Question Paper (28-Aug-2025) (Shift 3)
The correct answer is
Son's wife's father

Relationship Analysis

We need to determine the relationship between R and T by tracing the family connections provided.

  • Statement 1: R is the father of O. (R → Father of O)
  • Statement 2: O is the wife of A. This means A is the husband of O. (A ↔ O)
  • Deduction 1: Combining statements 1 and 2, R is the father-in-law of A.
  • Statement 3: A is the brother of S. (A ↔ Brother of S)
  • Statement 4: S is the daughter of T. This means T is the parent of S. (T → Parent of S)
  • Deduction 2: From statements 3 and 4, since A and S are siblings (children of the same parent T), T is also the parent of A.

Connecting R and T

We established that R is the father-in-law of A (Deduction 1) and T is the parent of A (Deduction 2).

Therefore, R is the father-in-law of T's child (A).

To express this relationship in the format of the options, let's consider T's perspective:

  • T's child is A. Let's assume A is T's son for the phrasing.
  • A is married to O.
  • R is the father of O.

So, R is the father of the wife of T's son (A). This translates to "Son's wife's father".

This matches the relationship described in Option 4.

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