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Question

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
'A / B' means 'A is the brother of B'.
Based on the above, how is W related to E if 'W - Q * F * E'?

This question was previously asked in
RRB ALP 2025 CBT 2 Heat Engine Question Paper (28-Jul-2026) (Shift 2)
The correct answer is
Father's sister

Coding Language Rules Explained

The problem provides specific codes for family relationships:

  • 'A + B' means 'A is the wife of B'.
  • 'A - B' means 'A is the daughter of B'. This implies A is female.
  • 'A * B' means 'A is the father of B'. This implies A is male.
  • 'A / B' means 'A is the brother of B'. This implies A is male.

Analyzing Relationship Expression: W - Q * F * E

We need to find the relationship between W and E using the expression 'W - Q * F * E'. We decode this step-by-step:

Decoding W - Q

According to the rule 'A - B', 'W - Q' means 'W is the daughter of Q'. This confirms W is female.

Decoding Q * F

Using the rule 'A * B', 'Q * F' means 'Q is the father of F'. This indicates Q is male. Since Q is the parent of W and also the parent of F, W and F are siblings.

Decoding F * E

Applying the rule 'A * B' again, 'F * E' means 'F is the father of E'. This confirms F is male.

Deriving W's Relation to E

Let's combine the derived facts:

  • W is the daughter of Q (female).
  • Q is the father of F (male).
  • F is the father of E (male).

From these points, we know W and F are siblings (children of Q). Since W is female, she is the sister of F. Because F is the father of E, W is the sister of E's father.

Final W to E Relationship

W is the sister of E's father. Therefore, W's relationship to E is Father's sister.

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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 mother of B',

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

    'A × B' means 'A is the sister of B', and 

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

    Based on the above, how is P related to T, if 'P × S ÷ R - Q + T'?


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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