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Question

Introducing Rajat to a guest, Ajay said, "He is the only son of my father's daughter-in law". How is Ajay related to Rajat?

This question was previously asked in
SSC CGL 2020 Tier-II (English) Previous Year Paper (29-Jan-2022)
The correct answer is

Either father or uncle

Understanding the Blood Relation Between Ajay and Rajat

Let's break down the statement made by Ajay to understand the relationship between Ajay and Rajat. Ajay says, "He (Rajat) is the only son of my father's daughter-in law".

We need to analyze this statement from Ajay's perspective:

  • "My father": This refers to Ajay's father.
  • "My father's daughter-in law": A daughter-in-law to Ajay's father is the wife of Ajay's son or the wife of Ajay's brother.

Now, let's consider the possibilities for "my father's daughter-in law":

  • Possibility 1: Ajay's father's daughter-in law is the wife of Ajay's son. This means Ajay has a son who is married. However, the statement says "He (Rajat) is the only son of...". If Rajat is the son of Ajay's son's wife (Ajay's grandson), then the statement would be about Ajay's grandson, not the son of the daughter-in-law directly. This interpretation seems less likely in typical blood relation puzzles focusing on direct lineage.
  • Possibility 2: Ajay's father's daughter-in law is the wife of Ajay's brother. In this case, the daughter-in-law is Ajay's sister-in-law.
  • Possibility 3: Ajay's father's daughter-in law is Ajay's own wife. This happens if Ajay is married, and his wife is the daughter-in-law of his father. This is possible if Ajay is the only son of his father, or if the statement refers to one specific daughter-in-law among multiple sons.

Let's focus on Possibilities 2 and 3, as they directly involve Rajat being the son of this daughter-in-law.

  • If "my father's daughter-in law" is Ajay's brother's wife (Possibility 2), then Rajat is the only son of Ajay's brother's wife. Rajat is Ajay's nephew. In this case, Ajay is Rajat's uncle.
  • If "my father's daughter-in law" is Ajay's wife (Possibility 3), then Rajat is the only son of Ajay's wife. Rajat is Ajay's son. In this case, Ajay is Rajat's father.

The statement "He is the only son of my father's daughter-in law" means that this specific daughter-in-law has only one son, and that son is Rajat. It does not restrict the number of sons Ajay's father has.

Therefore, based on the analysis, the daughter-in-law can be either Ajay's wife or the wife of Ajay's brother. Consequently, Rajat is either Ajay's son or Ajay's nephew.

This means Ajay is either the father of Rajat or the uncle of Rajat.

Relationship Ajay's Father's Daughter-in law is... Rajat (Her Only Son) is... Ajay is...
Scenario A Ajay's Wife Ajay's Son Rajat's Father
Scenario B Ajay's Brother's Wife Ajay's Nephew Rajat's Uncle

Revision Table: Analyzing Ajay and Rajat's Relation

Key Phrase from Statement Interpretation
"my father's daughter-in law" Wife of Ajay's son OR Wife of Ajay's brother OR Ajay's wife. Most likely wife of Ajay or Ajay's brother in this context.
"only son of my father's daughter-in law" The only son of this specific lady (Ajay's wife or sister-in-law) is Rajat.

Additional Information on Blood Relation Puzzles

Blood relation questions test your ability to understand and decode relationships based on given statements. Here are some tips for solving them:

  • Draw a family tree: Visualizing the relationships can make complex statements easier to understand.
  • Break down the statement: Start from the end of the statement and work backwards towards the person speaking.
  • Identify genders: Pay close attention to male/female indicators like son, daughter, father, mother, brother, sister, husband, wife.
  • Consider all possibilities: Sometimes, a statement might lead to more than one possible relationship, as seen in this case.
  • Keywords like "only son", "only daughter", "only child" are crucial as they limit the possibilities within a specific branch of the family tree.

Practicing different types of blood relation questions will improve your speed and accuracy.

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Similar Questions

  1. A is the son of B. C is the wife of B. D is the son of C. How is A related to D?
  2. A is the father of B. B is the brother of C. How is A related to C?
  3. A is the mother of B. B is the sister of C. How is A related to C?
  4. P is the brother of Q. Q is the sister of R. R is the father of S. How is P related to S?
  5. A is the wife of B. C is the son of A. How is C related to B?
  6. Ganesh was taking a walk with his mother’s brother’s father’s granddaughter. Who was he walking with?

  7. Pointing to Suresha, I said, “She is the daughter of the brother of the son of my wife.” How am I related to Suresha?

  8. Looking at a picture of a woman Vineeta said, "She is the wife of my father's brother's father." How is the woman in the picture related to Vineeta?

  9. Looking at the picture on the wall, he said “My sister-in-law S’s husband Q's son N had a sister R”. How is S related to R?

  10. Looking at a picture of a girl Veronica said, "She is the mother of my husband's brother's daughter." How is Veronica related to the girl in the picture?


Important Questions from General Blood Relation Problems

  1. A is the husband of B, C is the mother-in-law of B, D is the father of A, E is the mother of D, F is the mother of C and G. If H is the father of D, then what is the relation of H with E?

  2. Neeraj pointed at a photo of a lady and said, "She is the daughter of my paternal grandfather's only son. What is the relation of Neeraj with the lady in the photo?

  3. If my sister's mother-in-law's only son is Devika's father, how is Devika's paternal grandfather related to my sister?

  4. Pointing towards a boy, Ranjita said, “He is my husband's father-in-law's only daughter's son's father's only sister's son”. How is that boy's mother related to Ranjita's husband?

  5. If Samaira is the daughter of my father's mother's only son, how is Samaira related to me?

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