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Question

In a certain code language,
'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' and
'A / B' means 'A is the brother of B'.
Based on the above, how is L related to N if 'P + L / R - N'?

This question was previously asked in
RRB ALP 2025 CBT 2 Wiremen Question Paper (28-Jul-2026) (Shift 2)
The correct answer is
Mother's brother

The problem asks us to determine the relationship between L and N based on a given coding language for family relationships.

Decoding the Relationships

First, let's understand the code:

  • \(A + B\) 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 brother of B.

Analyzing the Expression: \(P + L / R - N\)

We break down the expression step-by-step:

  1. \(P + L\): This means P is the father of L. (P is male)
  2. \(L / R\): This means L is the brother of R. (L is male)
  3. \(R - N\): This means R is the mother of N. (R is female)

Determining L's Relationship to N

Let's combine these facts:

  • From step 1, P is the father of L.
  • From step 2, L is the brother of R. This implies P is also the father of R (since L and R are siblings).
  • From step 3, R is the mother of N.
  • Since L is the brother of R (step 2), and R is the mother of N (step 3), L is the brother of N's mother.
  • Therefore, L is the Mother's brother of N.

This matches Option D.

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Similar Questions

  1. G is the mother of Y. Y is the sister of V. S is the father of L. L is the husband of V. How is G related to S?

  2. G is the mother of Y. Y is the sister of V. S is the father of L. L is the son of V. How is G related to L?

  3. D is the father of E. B is the son of F. D is married to F. K is the son of R, and R is the father of F. How is R related to D?
  4. 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 P if ‘M + N ÷ O × P − Q?
  5. A and D are married to each other. A is the mother of L. L is the husband of P. P is the mother of U. U is the sister of O. O is the only grandson of D. How is O related to L?
  6. M is the mother of O. O is the sister of J. T is the daughter of K. T is the sister of J. J is the father of B. B is the wife of F. How is M related to K?
  7. In a certain code language,
    'S + T' means 'S is the father of T',
    'S - T' means 'S is the brother of T',
    'S x T' means 'S is the wife of T' and
    'S ÷ T' means 'S is the sister of T'.
    Based on the above, how is M related to Q if 'M - N ÷ O + P x Q'?
  8. In a certain code language,
    'A # B' means ‘A is the daughter 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’.

    Based on the above, how is D related to R if ‘D # M - S + P @ R’?
  9. A is the brother of B. B is the son of C. M is married to B. Q is the only daughter of M. C is the sister of D. How is A related to C?
  10. In a certain code language,
    'A + B' means 'A is the wife of B',
    'A - B' means 'A is the daughter of B',
    'A * B' means 'A is the father of B' and
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    Based on the above, how is W related to E if 'W - Q * F * E'?

Important Questions from Blood Relations

  1. Introducing a girl, the boy says, "She is the daughter of my uncle's father's son". How is the girl related to the boy.

    A. Niece

    B. Daughter-in-law

    C. Sister

    D. Aunt

  2. 'D' is the son of 'F'. 'E' is the sister of 'F', and her son is 'A' and daughter is 'X'. If 'B' is the maternal uncle of 'A'; So how is 'D' related to 'B'?

    A. Cousin

    B. Nephew

    C. Maternal Uncle

    D. Brother

  3. Pointing to a girl, Sunil said, "Her mother's brother is the only son of my mother's father and the brother has only one sister". How is the girl's mother related to Sunil?

    A. Maternal Aunt

    B. Sister

    C. Mother

    D. Grandmother

  4. In a certain code language,
    ‘A + B’ means ‘A is the mother of B’,
    ‘A − B’ means ‘A is the daughter of B’,
    ‘A × B’ means ‘A is the husband of B’,
    ‘A ÷ B’ means ‘A is the sister of B’.
    Based on the above, how is M related to Q if ‘M ÷ N − O × P + Q’?

  5. In a certain code language,

    A + B means 'A is the son of B',

    A - B means 'A is the wife of B',

    A × B means 'A is the brother of B' and

    A ÷ B means 'A is the daughter of B'.

    Based on the above, how is P related to R if 'P × S + M – T + R'?

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