In a family of seven persons, B is the brother of A and the son of C. D is the son-in-law of C, who has two grandchildren, E and F. A is the mother of F, who is the niece of G. E is the son of G. If C has two children, how is E related D?
Nephew
Analyzing the Blood Relation Puzzle
Let's break down the given information about the family of seven persons to determine the relationship between E and D. We will build a family structure step-by-step based on the clues provided.
Step-by-Step Relationship Analysis
- B is the brother of A and the son of C. This means C is the parent of B and A. B is male. A is female (as deduced later).
- D is the son-in-law of C. A son-in-law is married to a daughter. Since C has children A and B, and B is male, A must be the daughter of C, and D is married to A.
- C has two grandchildren, E and F. These grandchildren must be the children of A or B.
- A is the mother of F. Since A is C's daughter, F is a grandchild of C, confirming clue 3.
- F is the niece of G. F is the child of A. For F to be the niece of G, G must be a sibling of A.
- E is the son of G. E is also a grandchild of C (from clue 3), and G is a sibling of A.
- C has two children. We know C has children A and B. Since F is the niece of G and G is A's sibling, G must be either A or B. F is A's child, so F cannot be A's niece. Therefore, G must be B.
Building the Family Structure
Based on the analysis, we can construct the following family structure:
- C is a parent.
- A and B are the two children of C.
- B is male (brother of A). A is female (mother of F, married to D).
- D is married to A. D is C's son-in-law.
- A is the mother of F. F is C's grandchild.
- G is B (from deduction). E is the son of G, so E is the son of B. E is C's grandchild.
Let's visualize the structure:
| C | — Parent of — | A and B |
| A | — Married to — | D |
| A | — Mother of — | F |
| B (G) | — Father of — | E |
| A and B | — Siblings | |
| E and F | — Grandchildren of — | C |
Determining the Relationship between E and D
We need to find out how E is related to D.
- D is the husband of A.
- A is the sister of B.
- E is the son of B.
D is married to A, whose brother is B. E is the son of B. Therefore, E is the son of D's brother-in-law (B is A's brother and D's brother-in-law). The son of one's brother-in-law is one's nephew.
So, E is the nephew of D.
Revision Table: Key Relationships
| Relation | Persons Involved |
|---|---|
| Parent-Child | C to A, C to B |
| Siblings | A and B |
| Spouse | A and D |
| Mother-Son/Daughter | A to F |
| Father-Son | B to E |
| Grandparent-Grandchild | C to E, C to F |
| Aunt/Uncle-Niece/Nephew | A to E (Aunt), B to F (Uncle), B to E (Father) |
Additional Information: Understanding Blood Relations
Blood relation questions test your ability to trace relationships between members of a family using given information. Key terms and concepts to remember include:
- Direct Relations: Father, Mother, Son, Daughter, Brother, Sister.
- Indirect Relations: Grandfather, Grandmother, Uncle, Aunt, Nephew, Niece, Cousin, Son-in-law, Daughter-in-law, Brother-in-law, Sister-in-law, etc.
- Building a family tree diagram is often the easiest way to solve complex blood relation problems. Represent males with one symbol (e.g., square) and females with another (e.g., circle). Use lines to connect spouses and siblings, and vertical lines for parent-child relationships.
- Pay close attention to genders specified in the problem (e.g., brother, sister, son, daughter). If gender is not explicitly stated (e.g., 'child'), do not assume it unless implied by other relations (like son-in-law/daughter-in-law).
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Important Questions from Family Tree Problems
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A and B are brothers. C and D are sisters. A's son is D's brother. How is B related to C?
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?
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?
