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Question

If,

'C @ S' means 'C is the father of S',

'C * S' means 'C is the brother of S',

'C # S' means 'C is the sister of S',

'C $ S' means 'C is the daughter of S',

'C = S' means 'C is the mother of S',

then how is Z related to Q in the following expression?

Q $ R @ S * T  $ Z

This question was previously asked in
SSC CGL 2023 (Tier-II) Paper 1 Previous Year Paper (26-Oct-2023) (Shift-1)
The correct answer is Mother

Decoding Blood Relations with Symbols

This question asks us to determine the relationship between two individuals, Z and Q, based on a given expression involving specific symbols that represent family relationships. We need to decode the meaning of each symbol and then apply them sequentially to the expression to build the family tree or relationship diagram.

Understanding the Symbolic Relationships

Let's first list the meanings of the symbols provided:

  • C @ S: C is the father of S
  • C * S: C is the brother of S
  • C # S: C is the sister of S
  • C $ S: C is the daughter of S
  • C = S: C is the mother of S

Analyzing the Expression: Q $ R @ S * T $ Z

We will break down the expression step-by-step from left to right to determine the relationships:

  1. Q $ R: The symbol '$' means 'daughter'. So, Q is the daughter of R. This tells us R is a parent of Q, and Q is female.
  2. R @ S: The symbol '@' means 'father'. So, R is the father of S. This tells us R is male. Since R is a parent of Q and is the father of S, R is the father of both Q and S (or Q and S are siblings).
  3. S * T: The symbol '*' means 'brother'. So, S is the brother of T. This tells us S is male. Since S and T are siblings, and S is the child of R, T is also the child of R. So, Q, S, and T are siblings, all children of R (who is their father).
  4. T $ Z: The symbol '$' means 'daughter'. So, T is the daughter of Z. This tells us Z is a parent of T, and T is female. We already know T is the child of R. Since R is the father of T, Z must be the other parent of T. Therefore, R and Z are the parents of T.

Determining the Relationship Between Z and Q

From our analysis:

  • R is the father of Q, S, and T.
  • Z is a parent of T.
  • Since R is one parent of T, Z must be the other parent of T.
  • Therefore, R and Z are the parents of Q, S, and T.
  • R is male (father).
  • This means Z must be female (mother).
  • Q is the daughter of R and Z.
  • Thus, Z is the mother of Q.

Conclusion

Based on the step-by-step decoding of the expression and the given symbolic relationships, we have determined that Z is the mother of Q.

Revision Table: Symbols and Meanings

Symbol Meaning (A Symbol B)
@ A is the father of B
* A is the brother of B
# A is the sister of B
$ A is the daughter of B
= A is the mother of B

Additional Information on Blood Relation Puzzles

Blood relation puzzles are common in competitive exams. They test your ability to decode information and trace family connections. Here are some tips for solving them:

  • Always note down the meaning of each symbol or code clearly.
  • Break down the expression into smaller parts.
  • Work step-by-step to build a simple family tree or diagram. Use symbols for gender (like '+' for male, '-' for female) and connections (like double line for marriage, single line for siblings, vertical line for parent-child).
  • Pay close attention to the order of individuals in the expression and the direction of the relationship (e.g., A is the father of B is different from B is the father of A).
  • Once the diagram is complete, trace the relationship between the required individuals.
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Similar Questions

  1. Directions: These questions are based on the following information:

    ‘P @ Q’ means ‘Q is the mother of P’.
    ‘P $ Q’ means ‘Q is the husband of P’.
    ‘P # Q’ means ‘Q is the sister of P’.
    ‘P & Q’ means ‘Q is the son of P’.

    If ‘Z # M $ C & D & E’ then how is E related with M?
  2. Directions: These questions are based on the following information:

    'P@Q' means 'Q is the mother of P'.
    'P $ Q' means 'Q is the husband of P'.
    'P#Q' means 'Q is the sister of P'.
    'P & Q' means 'Q is the son of P'.

    If 'A & B @ C & D # E' then how is A related with E?
  3. A - B means A is the sister of B 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 What is the relation in A × B + C?
  4. 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?

  5. In a 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’;

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

    Based on the above, how is S related to P if ‘P x Q ÷ R – S x A’?

  6. 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 mother of B’. Based on the above, how is T related to P if ‘P − M + R ÷ T × S’?

  7. In a certain code language,

    ‘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’; and,

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

    Based on the above, how is M related to T if ‘M # N @ L × P + T’?

  8. 'P @ Q' means 'P is the wife of Q'.

    'P # Q' means 'P is the brother of Q'.

    'P $ Q' means 'P is the father of Q'.

    'P - Q' means 'P is the daughter of Q'.

    If Z - B $ D $ G, then how is Z related to G?

  9. ‘A + B’ means ‘Ais brother of B’

    ‘A - B’ means ‘A is mother of B’

    ‘A × B’ means ‘A is husband of B’

    ‘A ÷ B’ means ‘A is sister of B’

    If C ÷ B - E + A × F - D, then, which of the following statements is NOT correct? 

  10. 'A + B' means 'A is the sister of B'.

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

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

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

    If A + B - C ÷ D × E - F, then which of the following statements is NOT correct?


Important Questions from Coded Blood Relation Problems

  1. ‘R+S’ means ‘R is the daughter of S’. ‘R−S’ means ‘R is the husband of S’.‘R × S’ means ‘R is the brother of S’. If ‘T × V + Z’, then which of the following options is true?

  2. 'P × Q' means 'P is the wife of Q'. 'P + Q' means 'P is the father of Q'. 'P ÷ Q' means 'P is the daughter of Q'. 'P - Q' means 'P is the son of Q'. How is E related to I in the expression 'E ÷ F + G - H ÷ I' ?

  3. 'K % L' means 'K is the brother of L', 'K $ L' means 'K is the husband of L', 'K @ L' means 'K is the sister of L', 'K # L' means 'K is the mother of L'.

    How is H related to M in the expression ‘X @ P % T # M $ Y # J @ H’?

  4. If ‘A % B’ means ‘A is the father of B’, ‘A # B’ means ‘A is the brother of B’, and ‘A $ B’ means ‘A is the wife of B’, then how is K related to R in the given expression?

    K $ H % Y # M # R

  5. If 'A + B' means 'A is the daughter of B ', 'A × B' means 'A is the sister of B', and 'A = B' means 'A is the wife of B', then how is G related to R in the expression 'C × G × U + M = R'?

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