Pointing to a person, a man said to a woman, 'His mother is the only daughter of your father.' How was the woman related to the person? MCQ with Answer and Explanation

Explanation:
D and P are daughters of W. Since Y is M's grandmother and D is M's mother, Y is D's mother. Therefore, Y is also P's mother.

Explanation:
Since A is the father of C but C is not his son, C must be his daughter.

Explanation:
The father of X's father is X's grandfather. The granddaughter of X's grandfather is X's sister (or cousin). Y is the husband of X's sister. Therefore, Y is the brother-in-law of X.