A is the husband of B. C is the only grandson of D who is wife of E and mother-in-law of B. How is A related to E?
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) → Son
A person’s mother-in-law is the mother of his or her husband or wife; the clue about her links A to his parents.
D is the mother-in-law of B, and B’s husband is A, so D is A’s mother.
D is the wife of E, so E is A’s father.
A is a husband, so A is male: A is E’s son.

The clue about C, the only grandson of D, is not needed for this answer.