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Question

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

There are eight people - A, B, C, D, E, F, G and H in the family. There are three generation in the family and three married couples. C is the mother of F, who is the only child. G has only two children and has only one female child. E is the mother of B. B is the paternal aunt of F. D is the grandchild of G. H has no siblings and is married.

Who is the father of F?

This question was previously asked in
RBI Assistant Prelims Memory Based Paper (27 March 2022) (Shift 2)
The correct answer is

A

Identify F's Father: Family Logic Puzzle Solution

This solution details the step-by-step deduction process to determine who the father of F is, using the provided family relationship clues. We will analyze each piece of information to build a coherent family structure.

Analyzing Key Relationship Clues

Let's break down the essential clues to establish the core relationships:

  • Clue 1: "C is the mother of F, who is the only child." This establishes C as F's mother and confirms F has no siblings.
  • Clue 2: "B is the paternal aunt of F." A paternal aunt is the sister of one's father. This means F has a father, and B is his sister.
  • Clue 3: "E is the mother of B." Since B is the sister of F's father, and E is B's mother, it logically follows that E is also the mother of F's father. This places E as F's paternal grandmother.

Deducing F's Father

From the initial clues, we have established:

  • F's mother is C.
  • F's father has a sister named B.
  • E is the mother of F's father.

This means F's father is a son of E. Now, let's consider the options provided, and specifically test the possibility that A is the father of F.

  • If A is the father of F, then according to Clue 2, B must be A's sister.
  • According to Clue 3, E is the mother of B. If B is A's sister, then E must also be the mother of A.
  • This forms a direct lineage: E is the mother of siblings A (male) and B (female).

Integrating Other Family Members and Constraints

We now integrate the remaining individuals (G, D, H) and constraints into this structure:

  • Clue 4: "G has only two children and has only one female child." If we assume G is the father of A and B (with E as the mother), this condition is perfectly met. A is male, and B is female, meaning G has exactly two children, one of whom is female. This establishes G and E as a married couple.
  • Clue 5: "D is the grandchild of G." We know F is the only child of A. Since D is also a grandchild of G, and cannot be F, D must be a child of B. This indicates that B is married and has a child named D.
  • Clue 6: "H has no siblings and is married." As B has a child D, B must be married. If we assign H as B's spouse (making them parents of D), this accounts for the third married couple. The condition "H has no siblings" is met because H is not a child of G and E; H marries into the family, meaning H is not a sibling to A or B.

This interpretation satisfies all conditions:

  • Three Generations: The family spans three generations: Gen 1 (G, E), Gen 2 (A, B, C, H), and Gen 3 (F, D).
  • Three Married Couples: The identified couples are G & E, A & C, and B & H.
  • All eight individuals (A, B, C, D, E, F, G, H) are placed within the family structure with consistent relationships.

Conclusion

By systematically applying the given clues, particularly the definitions of 'paternal aunt' and 'mother', and testing the proposed father, we establish that A is the father of F. This conclusion aligns all family members and constraints, including the number of children G has, D being a grandchild, and H being married with no siblings.

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Important Questions from Blood Relations

  1. 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’. 

    Based on the above, how is A related to D if ‘A × B ÷ C + D’?

  2. How is T related to R?

  3. Who is S to V?

  4. How is F related to E?

  5. How is H related to G?

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