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Question

If A \(B means A is the husband of B, A # B means A is the brother of B and A * B means A is the mother of B, then what does P\) Q * R # S mean?

This question was previously asked in
RRB ALP 2018 CBT 2 Fitter Question Paper (21-Jan-2019) (Shift 3)
The correct answer is

P is the father of S

Decoding Blood Relations: Analyzing P $ Q * R # S

This question asks us to determine the relationship between P and S based on a coded expression representing family ties. We are given specific codes that represent different relationships.

Understanding the Relationship Codes

Let's first break down the meaning of each code provided:

  • A $ B means A is the husband of B.
  • A # B means A is the brother of B.
  • A * B means A is the mother of B.

Analyzing the Expression P $ Q * R # S

Now, let's decode the given expression step by step, moving from left to right:

The expression is P $ Q * R # S.

Step 1: Analyze P $ Q

According to the given rules, A $ B means A is the husband of B.

Therefore, P $ Q means P is the husband of Q.

This implies Q is the wife of P. P is male, and Q is female.

Step 2: Analyze Q * R

According to the given rules, A * B means A is the mother of B.

Therefore, Q * R means Q is the mother of R.

From Step 1, we know Q is the wife of P. If Q is the mother of R, and Q is married to P, then P must be the father of R.

So, at this point, we know P is the father of R.

Step 3: Analyze R # S

According to the given rules, A # B means A is the brother of B.

Therefore, R # S means R is the brother of S.

This means R is male, and R and S are siblings (they share the same parents). S could be male or female, as the '# B' rule specifies A's gender (brother) but not B's.

Connecting the Relationships

Let's put the relationships together:

  • P is the father of R (from Step 1 and Step 2).
  • R is the brother of S (from Step 3).

If P is the father of R, and R is the brother of S, it means R and S share the same parents. Since P is the father of R, P must also be the father of S.

Conclusion: P's Relationship to S

Based on the analysis, the relationship between P and S is that P is the father of S.

Evaluating the Options

Let's compare our conclusion with the given options:

  1. P is the father of S

    - This matches our conclusion.
  2. P is the brother-in-law of S

    - Incorrect.
  3. P is the son of S

    - Incorrect.
  4. P is the brother of S

    - Incorrect.

Therefore, the relationship P is the father of S is the correct interpretation of the expression P $ Q * R # S.

Blood Relations Revision Table

Relation Code Meaning Example (A, B)
A $ B A is the husband of B A is husband, B is wife
A # B A is the brother of B A is male, A and B are siblings
A * B A is the mother of B A is female, B is her child

Additional Information on Blood Relations Concepts

Blood relations questions test your ability to understand and decode relationships within a family tree. They often involve coded language or descriptions of relationships. Key concepts to remember include:

  • Parent: Father or Mother.
  • Child: Son or Daughter.
  • Sibling: Brother or Sister.
  • Spouse: Husband or Wife.
  • In-laws: Relatives by marriage (e.g., father-in-law, sister-in-law).
  • Aunt/Uncle: Sibling of a parent.
  • Cousin: Child of an aunt or uncle.
  • Grandparent: Parent of a parent.
  • Grandchild: Child of a child.

When solving these problems, it is often helpful to draw a family tree or diagram to visualize the relationships as you decode each part of the expression.

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Similar Questions

  1. Ina 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’ and 
    '\(A\div B\)' means ‘A is the father of B'. 
    How is M related to T if ‘M+N x P- \(S\div T\)'?

  2. 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’,

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

    and A # B means ‘A is the daughter of B’.

    How is K related to Q if ‘P × Q ÷ T + Z – S # K’?

  3. 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’.

    Based on the above, how is Q related to T if ‘P + Q – R × S ÷ T’?

  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’.

    Based on the above, how is Q related to T if ‘P – Q × R ÷ S + T’?

  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 × B means 'A is the wife of B',
    A ÷ B means 'A is the father of B',
    and A # B means 'A is the daughter of B'.

    How is Q related to J if 'Q + R – P × S ÷ T – J + K'?

  6. In a certain code language, 'A × B' means 'A is the son 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 T if 'M × N - P % S + T'?
  7. If G + H means G is daughter of H, G- H means G is sister H and G * H means G is husband of H, which of the following shows that I is the daughter of H?

  8. If A \(B means A is the sister of B, A # B means A is the husband of B and A * B means A is the daughter of B, then what does P\) Q * R # S mean?

  9. If E % F means E is the brother of F, E & F means E is the sister of F  and  E  \( F  means  E   is   the   daughter  of  F,  then  what  does  P%  Q  &  R  \)  S  mean?

  10. If C \(D means C is daughter of D, C & D means C is mother of D and C % D means C is son of D, then what does W\) X & Y % Z mean?


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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