Difficulty: Medium
Correct Answer: Sister of father-in-law
Explanation:
Reasoning
“Brother of my wife” is the speaker's brother-in-law (wife's brother).
He is the son of the lady's only brother ⇒ the lady's only brother is the father of the wife and her brother ⇒ the speaker's father-in-law.
Conclusion
Hence, the lady is the sister of the speaker's father-in-law.
Discussion & Comments