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Question

Directions: Study the following information carefully to answer the given questions:

 If 'A & B' means 'A is the mother of B'

 If 'A $ B' means 'A is the brother of B'

 If 'A # B' means 'A is the sister of B' 

If 'A @ B' means 'A is the father of B' 

If 'A % B' means 'A is the daughter of B'

 If 'A * B' means 'A is the son of B' 

Which of the following means R is a brother of P?

This question was previously asked in
SSC CGL 2025 Tier 2 Paper 1 Question Paper (19-Jan-2026)
The correct answer is
R * Q & P

Blood Relation Coding Puzzle Solution

The question requires identifying the coded expression that signifies 'R is a brother of P' using the provided relationship definitions.

Understanding the Relationship Codes

  • $A & B$: A is the mother of B (A is female)
  • $A $ B$: A is the brother of B (A is male)
  • $A # B$: A is the sister of B (A is female)
  • $A @ B$: A is the father of B (A is male)
  • $A % B$: A is the daughter of B (A is female)
  • $A * B$: A is the son of B (A is male)

Analyzing Options for 'R is brother of P'

Option 1: $P * Q % R$

  • $P * Q$ indicates P is the son of Q (P is male).
  • $Q % R$ indicates Q is the daughter of R (Q is female).
  • This establishes P as male and R as a grandparent, but not necessarily R as P's brother.

Option 2: $R * Q & P$

  • $R * Q$ indicates R is the son of Q (R is male).
  • $Q & P$ indicates Q is the mother of P (Q is female).
  • Since R is the son of Q (male) and Q is the mother of P, R and P are siblings sharing the same mother. Therefore, R is the brother of P. This matches the required condition.

Option 3: $Q % P & R$

  • $Q % P$ indicates Q is the daughter of P (Q is female).
  • $P & R$ indicates P is the mother of R (P is female).
  • This states P is R's mother. As P is female, R cannot be P's brother.

Option 4: $Q * R & P$

  • $Q * R$ indicates Q is the son of R (Q is male).
  • $R & P$ indicates R is the mother of P (R is female).
  • This states R is P's mother. As R is female, R cannot be P's brother.

Conclusion

Option 2, $R * Q & P$, is the correct expression because it accurately defines R as male and establishes R and P as siblings through their mother Q, fulfilling the condition 'R is a brother of P'.

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Similar Questions

  1. If S - T means that S is the mother of T, S × T means that S is the father of T, S + T means that S is the sister of T, then which of the following expression shows that P is the mother of R?

  2. A - B means ‘A is the mother of B’

    A * B means ‘A is the husband of B’

    A % B means ‘A is the brother of B’

    A $ B means ‘A is the sister of B’

    If I * J - K % L $ M * N, then how is I related to N?

  3. A # B means ‘A is the sister of B’.

    A @ B means ‘A is the son of B’.

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

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

    If W @ Q % T & Y @ M % K, then how is W related to K?

  4. A # B means ‘A is the brother of B’

    A @ B means ‘A is the son of B’

    A & B means ‘A is the wife of B’

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

    If A % B & C # D @ E, then how is B related to E?

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

    A @ B means ‘A is the son of B’.

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

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

    If W & Q # T & Y @ M % K, then how is Q related to K?

  6. If X × Y means that X is the mother of Y, X – Y means that X is the father of Y, X ÷ Y means that X is the sister of Y, then which of the following expression shows that P is the paternal grandfather of R?

  7. ‘A + B’ means ‘A is the father of B.

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

    ‘A × B' means ‘A is the sister of B’.

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

    If H + I - J × K × L - M ÷ N, then which of the following statements is NOT correct?  

  8. ‘A # B’ means ‘A is the brother 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 wife of B’.

    If D @ N @ H & Y @ F % V, then how is N related to F?

  9. ‘A # B’ means ‘A is the brother 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 wife of B’.

    If D @ N @ H & Y @ F % V, then how is Y related to D?

  10. ‘A # B’ means ‘A is the brother 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 wife of B’.

    If S % D # F @ G & H @ J,

    then how is F related to J?


Important Questions from Coded Blood Relation Problems

  1. If A @ B means A is the son of B, A # B means A is the husband of B and A * B means A is the daughter of B, then what does P @ Q * R # S mean? 

  2. If P $ Q means P is the husband of Q; P ! Q means P is the mother Q and P * Q means P is the daughter of Q, which of the following shows that Z is brother of W's wife, if Z is male?

  3. If P $ Q means P is the brother of Q; P ! Q means P is the mother Q and P * Q means P is the son of Q, which of the following shows that W is brother of Z?

  4. Read the following information carefully and answer the question given below:

    M * N means ‘ M is the sister of N’

    M % N means ‘ M is the father of N’

    M # N means ‘M is the mother of N’

    Which of the following option gives that, M is father of R?

  5. If ‘A + B’ means ‘A is the mother of B’, ‘A - B’ means ‘A is the father of B’, ‘A × B’ means ‘A is the brother of B’, ‘A & B’ means ‘A is the son of B’, then how is M related to K in the expression ‘N − M + T × L & G & K’?

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