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Question

A + B means ‘A is the father of B’
A – B means ‘A is the mother of B’
A % B means ‘A is the brother of B’
A & B means ‘A is the son of B’
If P – Q % R & S + T, then how is P related to T?

This question was previously asked in
SSC CGL 2022 Tier-II (Paper 2 JSO) Previous Year Paper (04-Mar-2023)
The correct answer is

Mother

Understanding Blood Relations through Symbols

This question requires us to decode a set of relationships represented by symbols and then use that information to determine the relationship between two individuals in a given expression. Let's first understand what each symbol signifies:

  • A + B means ‘A is the father of B’
  • A – B means ‘A is the mother of B’
  • A % B means ‘A is the brother of B’
  • A & B means ‘A is the son of B’

Now, let's break down the given expression: P – Q % R & S + T.

Step-by-Step Analysis of the Expression

We will analyze the expression segment by segment from left to right:

  1. P – Q: According to the definition of '–', P is the mother of Q.
  2. Q % R: According to the definition of '%', Q is the brother of R. This means Q and R are siblings. Since Q is the brother, Q is male. P is the mother of both Q and R.
  3. R & S: According to the definition of '&', R is the son of S. We already know R is the child of P (from step 1) and S (from this step). Since P is R's mother, S must be R's father. This also confirms that P and S are a married couple, with P being the wife (mother) and S being the husband (father). R is male as he is the son.
  4. S + T: According to the definition of '+', S is the father of T. We know S is the father of R (and Q). Now we know S is also the father of T. This means T is a child of S. T is either the son or daughter of S.

Establishing the Relationships

Let's summarize the relationships we have deduced:

  • P is the mother of Q and R.
  • Q is the brother of R. (Q and R are siblings).
  • R is the son of S.
  • S is the father of Q and R (since R is son of S and Q is brother of R, and P is mother of Q and R, S must be the father).
  • P and S are husband and wife, where P is the mother/wife and S is the father/husband.
  • S is the father of T.

Determining the Relationship between P and T

We want to find out how P is related to T.

  • We know S is the father of T.
  • We also know that P is the wife of S (and the mother of S's other children, Q and R).
  • Since P is the wife of T's father (S), P is T's mother.

Therefore, P is the mother of T.

Relationship Analysis Table

Expression Segment Relationship Deduced Further Implications
P – Q P is Mother of Q P is female
Q % R Q is Brother of R Q is male, Q and R are siblings
R & S R is Son of S R is male, S is a parent of R
S + T S is Father of T S is male, T is a child of S

Combining the facts: P is mother of Q and R. R is son of S. Q is brother of R. So P and S are parents of Q and R, with P as mother and S as father. S is also father of T. Thus, P is the mother of T as P is S's wife and T is S's child.

Final Answer

Based on the analysis, P is the mother of T.

Revision Table: Blood Relations Code Analysis

Symbol Meaning
+ Father
Mother
% Brother
& Son

Additional Information: Solving Blood Relation Puzzles

Blood relation questions often involve decoding symbolic or verbal relationships and constructing a family tree or relationship diagram to determine the relationship between two individuals. Here are some tips:

  • Carefully read and understand the meaning of each symbol or term used to represent relationships.
  • Break down the given expression or statement into smaller parts.
  • Analyze each part to establish the relationship between consecutive individuals.
  • Combine these relationships to build a complete picture of the family structure.
  • Pay attention to the gender implied by the relationships (e.g., father implies male, mother implies female, son implies male, daughter implies female, brother implies male, sister implies female).
  • Some relations like 'parent' or 'child' may not specify gender initially, which needs to be determined from other clues in the expression.
  • Once the structure is clear, trace the path between the two individuals in question to find their relationship.

Practicing different types of blood relation problems helps in quickly decoding expressions and accurately determining relationships.

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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. 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

  9. '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?

  10. ‘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? 


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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