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Question

If E % F means E is father of F, E & F means E is sister of F and E \(F means E is wife of F, then what does P \) R % S & Q mean, if R has only one daughter?

This question was previously asked in
RRB ALP/Technician 2018 CBT 2 Electronics Mechanic Question Paper (23-Jan-2019) (Shift 1)
The correct answer is
Q is son of P

Decoding Relationship Symbols

The problem defines specific symbols for family relationships:

  • \(E % F\) means E is the father of F.
  • \(E & F\) means E is the sister of F.
  • \(E\) F$ means E is the wife of F.

Analyzing the Expression: P $ R % S & Q

Let's break down the expression step-by-step:

  1. P $ R: This means P is the wife of R. From this, we know P is female and R is male.
  2. R % S: This means R is the father of S. Since R is male, this is consistent.
  3. S & Q: This means S is the sister of Q. This tells us S is female.

Determining Family Structure

Combining the information:

  • P is the wife of R.
  • R is the father of S.
  • S is the sister of Q.
  • Therefore, P is the mother of S and Q, and R is the father of S and Q.
  • We know S is female (a daughter).

Applying the Constraint: R has only one daughter

Since S is established as a daughter of R, and R has only one daughter, Q cannot be a daughter. Therefore, Q must be a son.

Finding the Relationship Between P and Q

We established that P is the mother of Q, and we deduced that Q is the son of P.

This means Q is the son of P.

Matching with Options

Comparing this result with the given options:

  • Option 1: Q is sister of P (Incorrect, Q is male)
  • Option 2: P is father of Q (Incorrect, P is female)
  • Option 3: Q is son of P (Correct)
  • Option 4: Q is daughter of P (Incorrect, Q is male)
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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 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'?
  3. 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?

  4. If C% D means C is the wife of D; C & D means C is the father of D; and If C $ D means C is the daughter of D, then what would X $ Y % W & Z mean if W has only one daughter?

  5. If C \(D means C is the husband of D, C & D means C is the mother of D and C % D means C is the son of D, then what does X % Z\) W & Y mean if W has only one son?
  6. If G + H means G is the son H, G - H means G is the husband of H and G * H means G is the sister of H, which of the following shows that J is the mother-in-law of N?
  7. If I + J means I is the daughter J, I - J means I is father of J and I * J means I is the mother of J, then which of the following options shows that G is the father of F?
  8. If C $ D means C is the husband of D, C & D means C is the mother of D and C % D means C is the son of D, then what does X % Z $ W & Y mean if W has only one son?
  9. If G + H means G is the son H, G - H means G is the husband of H and G * H means G is the sister of H, which of the following shows that J is the mother-in-law of N?
  10. If I + J means I is the father of J; I – J means I is the son-in-law of J; and I * J means I is the wife of J, then which of the following shows that F is the brother of C, considering that C has only one sibling?


Important Questions from Coded Blood Relation Problems

  1. 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?

  2. 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?

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

  4. If 'A % B' means A is the father of B, 'A * B' means A is the mother of B, 'A @ B' means A is the wife of B, then Which of the following means that X is the grandmother of Y?

  5. In a certain code language,

    'A - B' means 'A is father of B'

    'A + B' means 'A is mother of B'

    'A × B' means 'A is husband of B', and

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

    If 'U ÷ Q ÷ P - R × S + T × V', then how is U related to V?

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