Question

A's father's wife's only daughter is B. How is A related to B?

• A. Nephew
• B. Cousin
• C. Sibling
• D. Uncle

Answer 1

Answer:

C. Sibling

“A's father's wife's only daughter is B”

Break it down:

• A’s father’s wife = A’s mother

• Mother’s only daughter = B

So, B is the only daughter of A’s mother. Therefore, B is A’s sister if A is male, or A himself if female.
Since A’s gender is not given, the definite relation cannot be fixed.

Hence, A is the sibling of B.