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Question

There are seven members, B, C, D, E, F, G and H, in a family. H is the only daughter-in- law of D. E is the sister of C. C is the only son of F, who is the wife of D. B and G are the sons of H. How is G related to F?

This question was previously asked in
SSC CGL 2020 (Tier-2) Statistics Previous Year Paper 3 (28-Jan-2022)
The correct answer is

Grandson

Understanding Family Relationships: Finding G's Relation to F

This question asks us to determine the relationship between two members, G and F, within a family based on the given clues. To solve this, we need to carefully analyze each statement and build a family tree or diagram representing the relationships.

Analyzing the Family Structure Clues

We are given information about seven members: B, C, D, E, F, G, and H. Let's break down each clue:

  1. H is the only daughter-in-law of D. This tells us that H is married to a son of D. 'Only daughter-in-law' implies D has only one son who is married.
  2. E is the sister of C. This means E and C are siblings.
  3. C is the only son of F, who is the wife of D.
    • F is the wife of D. So, D and F are a married couple.
    • C is the only son of F. Since F is married to D, C is also the son of D.
    • Being the 'only son' of F (and D) confirms that D has only one son, who is C.
  4. B and G are the sons of H. This means H is the mother of B and G. B and G are brothers.

Building the Family Tree

Let's connect the clues:

  • From clue 3, D and F are married, and C is their son. F is the mother, and D is the father.
  • From clue 2, E is the sister of C. Since C is the son of D and F, E must be the daughter of D and F. So, D and F have children C (son) and E (daughter). C is their only son.
  • From clue 1, H is the only daughter-in-law of D. A daughter-in-law is the wife of a son. Since C is the only son of D, H must be married to C.
  • From clue 4, B and G are the sons of H. Since H is married to C, B and G are the sons of both H and C.

Based on this, we can visualize the family structure:

Generation Members Relationships
Grandparents D (Male), F (Female) Married Couple
Parents C (Male), E (Female), H (Female) C is son of D&F.
E is daughter of D&F.
C is married to H.
Children / Grandchildren B (Male), G (Male) Sons of C&H. Grandchildren of D&F.

Determining the Relationship of G to F

We need to find how G is related to F.

  • G is the son of C.
  • C is the son of F.

Therefore, G is the son of F's son. The son of one's son is called a grandson.

Thus, G is the grandson of F.

Conclusion

By carefully piecing together the given relationships, we determined that G is the son of C, and C is the son of F. This establishes G as the grandson of F.

Revision Table: Key Family Relationships

Relationship Members
Husband-Wife D & F, C & H
Parents-Children D&F are parents of C & E.
C&H are parents of B & G.
Siblings C & E, B & G
Grandparents-Grandchildren D&F are grandparents of B & G.

Additional Information on Blood Relations Questions

Blood relations questions test your ability to understand and deduce relationships based on given information. Here are some tips:

  • Draw a diagram or family tree. This helps visualize the connections.
  • Use symbols for gender (e.g., + for male, - for female) and relationships (e.g., double line for marriage, single line for sibling, vertical line for parent-child).
  • Break down complex sentences into simpler parts.
  • Identify the central person or couple and build the tree outwards.
  • Keep track of gender and the specific type of relationship (e.g., brother vs. brother-in-law).
  • Practice different types of blood relations puzzles to improve your speed and accuracy.
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Important Questions from Family Tree Problems

  1. Six members of a family namely A, B, C, D, E and F are travelling together. B is the son of C but C is not the mother of B. A and C are married couple. E is the brother of C, D is the daughter of A. F is the brother of B. How many male members are there in the family?
  2. Sunil is the son of Kesav. Simran, who is Kesav's sister, has a son Maruti and daughter Sita. Prem is the maternal uncle of Maruti. How is Sunil related to Maruti?
  3. A and B are brothers. C and D are sisters. A's son is D's brother. How is B related to C?

  4. A is B's sister. C is B's mother. D is C's father. E is D's mother. Then, how is A related to D?

  5. Shanti’s daughter Chandini is married to Abhi. Anchal is married to Sandy, the grandson of Shanti. Abhi's grandson is Karan. Rashmi is the mother of Karan. Shaurya is Anchal's son. How is Shaurya related to Karan?

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