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Question

Ina certain code language, 
‘A+B’ means ‘A is the mother of B’, 
'A - B' means ‘A is the brother of B’, 
'A x B’ means ‘A is the wife of B’ and 
'\(A\div B\)' means ‘A is the father of B'. 
How is M related to T if ‘M+N x P- \(S\div T\)'?

This question was previously asked in
RRB NTPC 2024 Undergraduate CBT 1 Question Paper (29-Aug-2025) (Shift 1)
The correct answer is

Father's brother's wife's mother

Understanding the Coding Language

This problem involves a coding language where different symbols represent family relationships. We need to decode a given expression to find the relationship between two individuals, M and T.

Decoding the Symbols

First, let's list down the meanings of the symbols as provided:

Symbol Meaning
\(A+B\) A is the mother of B
\(A-B\) A is the brother of B
\(A \times B\) A is the wife of B
\(A \div B\) A is the father of B

Decoding the Expression: M+N x P - S ÷ T

Now, let's break down the expression '\(M+N \times P - S \div T\)' step by step:

  • M + N: According to the code, this means 'M is the mother of N'.
  • N x P: This means 'N is the wife of P'. Consequently, P is the husband of N.
  • P - S: This means 'P is the brother of S'. Therefore, S is a sibling of P.
  • S ÷ T: This means 'S is the father of T'. Consequently, T is a child of S.

Establishing the Family Connections

Let's combine these relationships to understand the family structure:

  • M is the mother of N.
  • N is married to P (N is P's wife).
  • P is the brother of S.
  • S is the father of T.

From these points, we can infer the following connections relevant to M and T:

  • Since M is the mother of N, and N is married to P, M is the mother-in-law of P.
  • Since P is the brother of S, S is the brother of P.
  • Since S is the father of T, T is the child of S.
  • Combining these: M is the mother of N, N is the wife of P, P is the brother of S, and S is the father of T.

Determining M's Relation to T

We need to find how M is related to T. Let's trace the lineage from T back to M:

  1. T's father is S.
  2. S's brother is P. (So, P is T's paternal uncle).
  3. P's wife is N. (So, N is T's paternal uncle's wife).
  4. M is the mother of N. (So, M is the mother of T's paternal uncle's wife).

Therefore, M is the mother of T's father's brother's wife.

Matching with the Options

Let's look at the options provided:

  1. Father's brother's wife's mother
  2. Father's sister's daughter
  3. Father's brother's wife
  4. Father's brother's wife's sister

Our derived relationship is 'mother of T's father's brother's wife'. This precisely matches the description 'Father's brother's wife's mother'.

In the context of T:

  • T's father is S.
  • T's father's brother is P.
  • T's father's brother's wife is N.
  • T's father's brother's wife's mother is M.

Thus, M is related to T as Father's brother's wife's mother.

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Similar Questions

  1. In a certain code language, A + B means ‘A is the mother of B’, A − B means ‘A is the brother of B’, A × B means ‘A is the wife of B’ and A % B means ‘A is the father of B’. How is Shreya related to Mahak if ‘Shreya + Dev − Taran × Harshit % Mahak’?

  2. In a certain code language,
    A + B means ‘A is the mother of B’,
    A − B means ‘A is the brother of B’,
    A × B means ‘A is the wife of B’ and
    A % B means ‘A is the father of B’.
    How is Satish related to Mayank if ‘Satish + Deep × Piyush – Hitesh % Mayank’?

  3. In a certain code language,
    ‘A + B’ means ‘A is the mother of B’,
    ‘A − B’ means ‘A is the brother of B’,
    ‘A × B’ means ‘A is the wife of B’ and
    ‘A ÷ B’ means ‘A is the father of B’.
    How is M related to K if ‘J × K − L ÷ M + N’?
  4. If C% D means C is the mother of D, C $ D means C is the wife of D, and if C & D means C is the son-in-law of D, then what does W % X $ Y & Z mean?

  5. If G + H means G is the sister of H; G – H means G is the daughter H and G * H means G is wife of H, which of the following shows that Q is the father of P?

  6. If A $ B means A is the sister of B, A # B means A is the mother of B and if A × B means A is the father of B, then what does P × Q $ R # S mean?

  7. If C $ D means C is the husband of D, C & D means C is the mother of D and C % D means C is the son of D, then what does X % Z $ W & Y mean if W has only one son?
  8. If C% D means C is the wife of D; C & D means C is the father of D; and If C $ D means C is the daughter of D, then what would X $ Y % W & Z mean if W has only one daughter?

  9. If I + J means I is the father of J; I – J means I is the son-in-law of J; and I * J means I is the wife of J, then which of the following shows that F is the brother of C, considering that C has only one sibling?

  10. If G + H means G is daughter of H, G- H means G is sister H and G * H means G is husband of H, which of the following shows that I is the daughter of H?


Important Questions from Coded Blood Relation Problems

  1. ‘A # B’ means ‘A is the son of B’.

    ‘A @ B’ means ‘A is the mother of B’.

    ‘A & B’ means ‘A is the wife of B’.

    ‘A % B’ means ‘A is the sister of B’.

    If ‘M @ R % K # G # N & T’, then which of the following statements is NOT correct?

  2. ‘A % B’ means ‘A is the sister of B’.

    ‘A $ B’ means ‘A is the brother of B’.

    ‘A @ B’ means ‘A is the son of B’.

    ‘A & B’ means ‘A is the mother of B’.

    If ‘R % T & Z $ S @ V @ C % Y’, then which of the following statements is NOT correct?

  3. Read the given information carefully and answer the question that follows.

    ‘K $ D’ means ‘K is the father of D’.

    ‘K < D’ means ‘K is the wife of D’.

    ‘K > D’ means ‘K is the daughter of D’.

    'K @ D’ means ‘K is the son of D’.

    How is S related to N in the expression ‘H > R $ S @ T > N’?

  4. ‘R8S’ means ‘R is the father of S’.

    ‘R7S’ means ‘R is the sister of S’.

    ‘R6S’ means ‘R is the brother of S’.

    ‘R2S’ means ‘R is the wife of S’.

    Which of the following expressions represents ‘X is the mother of Y’?

  5. ‘A # B’ means ‘A is the father of B’.

    ‘A % B’ means ‘A is the mother of B’.

    ‘A @ B’ means ‘A is the sister of B’.

    ‘A & B’ means ‘A is the son of B’.

    If ‘G # M # T % S @ H & R & W @ U’, then which of the following statements is NOT correct?

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