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Question

Rohit told Ruchi, “Your mother’s father is the father-in-law of my son”. How is Ruchi related to Rohit?

The correct answer is

Granddaughter

Understanding Blood Relations: Solving the Puzzle

Blood relation questions test your ability to decipher relationships based on given statements. To solve this type of problem, it is helpful to break down the statement step-by-step and identify the individuals involved and their connections.

The statement given by Rohit to Ruchi is: “Your mother’s father is the father-in-law of my son”.

Let's analyze the statement from Ruchi's perspective first, then from Rohit's perspective, and finally connect the two parts.

Analyzing Ruchi's Relation

  • “Your mother’s father” refers to Ruchi’s maternal grandfather.

Analyzing Rohit's Relation

  • “my son” refers to Rohit's son.
  • “the father-in-law of my son” means the father of Rohit's son's wife.

Connecting the Relations

The statement connects these two parts:

Ruchi’s maternal grandfather = The father of Rohit's son's wife.

Let's trace this from Rohit's side:

  1. Rohit has a son.
  2. Rohit's son has a wife.
  3. The wife's father is the father-in-law of Rohit's son.

So, Ruchi's maternal grandfather is the father of Rohit's son's wife.

This implies that Ruchi's mother is Rohit's son's wife (since the father of Ruchi's mother is also the father of Rohit's son's wife).

Now, let's see how Ruchi is related to Rohit based on this:

  • Ruchi's mother is Rohit's son's wife.
  • This means Ruchi's mother is Rohit's daughter-in-law.
  • If Ruchi's mother is Rohit's daughter-in-law, then Ruchi is the daughter of Rohit's son.
  • A daughter of one's son is their granddaughter.

Therefore, Ruchi is Rohit's granddaughter.

Conclusion: Ruchi's Relationship to Rohit

Based on the detailed analysis of the statement, Ruchi is the granddaughter of Rohit.

Summary of Relationships
Part of Statement Interpretation
Your mother’s father (from Ruchi’s perspective) Ruchi’s maternal grandfather
father-in-law of my son (from Rohit’s perspective) Father of Rohit’s son’s wife
Connecting the two Ruchi’s maternal grandfather is the father of Rohit’s son’s wife
Implication Ruchi’s mother is Rohit’s son’s wife
Final Relation Ruchi is the daughter of Rohit’s son

Revision Table: Key Blood Relations

Common Blood Relations
Relation Description
Son/Daughter Your child
Grandson/Granddaughter Child of your son or daughter
Father/Mother Your parent
Grandfather/Grandmother Parent of your parent
Uncle/Aunt Brother/Sister of your parent
Father-in-law/Mother-in-law Parent of your spouse
Son-in-law/Daughter-in-law Spouse of your child
Brother-in-law/Sister-in-law Spouse of your sibling, or sibling of your spouse

Additional Information on Blood Relation Puzzles

Blood relation puzzles are a common type of question in aptitude tests and reasoning sections. They require careful analysis of the relationships described in a statement or a series of statements. Here are some tips for solving them:

  • Draw a Family Tree: Visualizing the relationships using a diagram can be very helpful, especially for complex problems. Use symbols for gender (e.g., circle for female, square for male) and lines to connect spouses and children.
  • Break Down the Statement: Tackle the statement piece by piece. Identify who 'my', 'your', 'he', 'she' refers to at each step.
  • Work Backwards/Forwards: Sometimes starting from the end of a complex phrase and working backwards helps clarify the relationship.
  • Common Relationships: Be familiar with standard family terms like cousin, niece, nephew, in-laws, etc.
  • Practice: The more you practice, the better you become at quickly identifying the connections.
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Important Questions from General Blood Relation Problems

  1. Pointing to a girl in a college poster, Deepika said, "She is my mother-in-law's only son’s niece". How is that girl's mother related to Deepika?

  2. Pointing to the photograph of a girl, Raghav said, "She is my father's mother's daughter's only brother's daughter". How is Raghav's father related to that girl's mother?

  3. Pointing towards a woman, Reena said, “She is the only daughter of my father-in-law.” How is the woman related to Reena?

  4. Pointing towards Sumit, Anuj said, “He is my mother’s father’s son’s brother’s son”. If Vinita who is married to Kartik, is the mother of Anuj, then how is Vinita related to Sumit?

  5. Introducing Reshma to a guest, a lady, Karishma, said, “She is the daughter of my father-in-law’s daughter”. How is Reshma related to Karishma?

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