A girl introduced a boy as "the son of the daughter of the father of my uncle." How is the boy related to the girl?

Introduction / Context:

This blood-relation puzzle has a layered description involving “the son of the daughter of the father of my uncle”. It is a classic examination question designed to test whether you can carefully unpack nested relationships and correctly identify the final familial connection. The pronoun “my” refers to the girl who is introducing the boy.

Given Data / Assumptions:

• The speaker is a girl.
• She describes a boy as: “the son of the daughter of the father of my uncle.”
• We assume a typical family tree where “uncle” means the brother of one of her parents.
• We are asked how this boy is related to the girl.
• Standard exam convention usually assumes straightforward relationships (no step-siblings or adoptions) unless stated.

Concept / Approach:

To solve nested relationship phrases, it is helpful to decode them from inside out. We start by identifying the “father of my uncle”, then his “daughter”, and finally “the son” of that daughter. Once we turn each phrase into a familiar family role (such as grandfather, mother, etc.), the final relationship usually becomes clear. We also follow the common exam assumption that all siblings mentioned here belong to the same nuclear family.

Step-by-Step Solution:

Verification / Alternative check:

We can rewrite the full expression using the more familiar labels identified. The boy is introduced as “the son of my mother”. That is exactly what we call a brother. Because the speaker is a girl, her mother's son is her brother, not herself. Hence the boy must be her brother.

Why Other Options Are Wrong:

“Son” would suggest that the boy is the girl's own child, which is not supported by any part of the chain.

“Uncle” would apply if the boy were a brother of one of her parents, but the chain clearly makes him a descendant of her mother, not a sibling of her mother or father.

“Son-in-law” is irrelevant, as no information about marriage of the girl's children is given.

Common Pitfalls:

Candidates often get lost in the multiple “of the” phrases and misread the generational direction. A good strategy is to replace each step with a simple label (grandfather, mother, brother) on a rough diagram before going to the next step. This structured approach helps prevent confusion in nested expressions.

Final Answer:

The boy is the girl's brother.