Pointing to a gentleman, Deepak said, "His only brother is the father of my daughter's father." How is the gentleman related to Deepak?

Introduction / Context:

This question requires you to decode a relation expressed via "my daughter's father" and then link it to "his only brother". It tests careful tracking of generational levels and sibling links. Once you correctly identify who "my daughter's father" is, the rest of the reasoning becomes much easier.

Given Data / Assumptions:

• Deepak is speaking and pointing to a gentleman.
• He says: "His only brother is the father of my daughter's father."
• "My daughter's father" refers to the father of Deepak's daughter.
• We assume Deepak is the biological father of his daughter.
• We must find the relation of the gentleman to Deepak.

Concept / Approach:

The expression "my daughter's father" often simplifies directly to "me" (the speaker), when the speaker is the biological father. Then we look at the phrase "the father of my daughter's father", which becomes the father of Deepak himself—Deepak's father. That man is the "only brother" of the gentleman being pointed at, which implies that the gentleman is Deepak's paternal uncle.

Step-by-Step Solution:

Verification / Alternative check:

Let F be Deepak's father, and U be the gentleman. The statement "U's only brother is the father of my daughter's father" becomes "U's only brother is F". Then Deepak is F's son, and U is F's brother. In standard family terminology, U is Deepak's paternal uncle. This matches the previous reasoning and confirms the conclusion.

Why Other Options Are Wrong:

The gentleman is not Deepak's father, because his only brother is identified as Deepak's father, not himself.

He is not a grandfather, since he is one generation above Deepak (as a sibling of his father), not two generations above.

He is not a brother-in-law; there is no indication that he is connected via marriage to any of Deepak's siblings or spouse.

Common Pitfalls:

Some candidates mistakenly take "my daughter's father" as someone other than the speaker, or they confuse "his only brother" with "his father". Careful substitution of each phrase with its simpler equivalent—first "my daughter's father" = me, then "father of me" = my father—helps avoid this confusion. Writing a small symbolic diagram can also be helpful.

Final Answer:

The gentleman is Deepak's uncle.