Question

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

• A. Brother
• B. Son
• C. Son in law
• D. Uncle

Hint:

Trace the chain from the father of the uncle back down to a son; it lands on the girl's own mother and brother.

Answer 1

The Correct Option is A

Step 1: Build the chain from the far end backward. Start with the girl and move up one generation: her uncle's father is her grandfather, call him G.
Step 2: G has a daughter, and since the chain must connect back to the girl's own family, this daughter is the girl's mother, M.
Step 3: The son of M, other than the girl herself, is the girl's brother.
\[\boxed{\text{Brother}}\]