A is the daughter-in-law of B. E is the brother of A. B has only one son, C. If D is the son of C, how is D related to A?
Son
Solving Blood Relation Questions
Understanding blood relations is a common type of question in reasoning tests. These questions require you to build a family tree or diagram based on the relationships provided and then determine the relationship between two specific individuals.
Analyzing the Given Blood Relations
Let's break down the relationships given in the question step-by-step:
- A is the daughter-in-law of B: This means A is married to B's son.
- E is the brother of A: This tells us about A's sibling, E. This information isn't directly needed to find the relationship between D and A, as it involves A's original family, not the family she married into.
- B has only one son, C: Since A is the daughter-in-law of B and B has only one son, this son must be C. Therefore, A is married to C.
- D is the son of C: This means D is the child of C.
Building the Family Structure
From the given information, we can deduce the following connections:
- B has a son C.
- A is the daughter-in-law of B, and C is B's only son, so A is married to C. A and C are husband and wife.
- D is the son of C.
Combining these points, we see that D is the son of C, and C is married to A. Therefore, D is also the son of A.
Determining the Relationship Between D and A
We have established that A and C are married, and D is the son of C. Since A is C's wife, D is also the son of A.
Thus, D is related to A as her son.
Evaluating the Options
Let's look at the provided options based on our analysis:
- Son’s son: Incorrect. D is directly A's son, not her grandson.
- Brother: Incorrect. D is A's son, not her sibling.
- Son's wife: Incorrect. This describes a daughter-in-law. D is male and A's son.
- Son: Correct. D is the son of A.
Based on our analysis, the correct relationship is Son.
| Individual | Relationship Clues | Deduced Relationship |
|---|---|---|
| A | Daughter-in-law of B, Sister of E | Married to C (B's only son) |
| B | Has only one son, C | Parent of C |
| C | Son of B | Husband of A, Father of D |
| D | Son of C | Son of A and C |
| E | Brother of A | Not directly related to D through B's family |
Revision Table: Blood Relation Concepts
Understanding common relationship terms is key to solving blood relation problems.
| Relationship Term | Definition |
|---|---|
| Father | A male parent |
| Mother | A female parent |
| Son | A male child |
| Daughter | A female child |
| Brother | A male sibling |
| Sister | A female sibling |
| Uncle | Father's or mother's brother |
| Aunt | Father's or mother's sister |
| Cousin | Child of an uncle or aunt |
| Grandfather | Father's or mother's father |
| Grandmother | Father's or mother's mother |
| Grandson | Son's son |
| Granddaughter | Son's daughter or daughter's daughter |
| Son-in-law | Daughter's husband |
| Daughter-in-law | Son's wife |
Additional Information: Tips for Blood Relation Problems
Here are some tips to help you solve blood relation questions efficiently:
- Draw a diagram or family tree to visualize the relationships. 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).
- Start with the most concrete relationships given.
- Work step-by-step, adding individuals and connections as you deduce them.
- Focus only on the individuals mentioned and the relationships required to answer the question. Sometimes extra information is given that isn't necessary.
- Double-check your deductions.
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Important Questions from Family Tree Problems
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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?
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