Arun's father is the only son of Vimal's mother how is Anu related to Vimal's son?

Amit told to Alok, "yesterday I defeated the only brother of the daughter of my grandmother." Whom did Amit defeat?

Amit Said, "this girl is the wife of the grandsom of my Mother." Who is Arun to the Girl?

Poinjting towards a gentleman Deepak said, "his only brother is the father of my daughter's father." How is the gentleman related to Deepak?

Pointing to a girl, Nidhi said, "She is the only daughter of my grandmother's only child." How is the girl related to Nidhi?

Pointing to a girl, Mihir said, "She is the only daughter of my grandfather's only child." How is the girl related to Mihir?

Ronit's son Rohit, says to a girl, "your father is the only brother of my mother who is the only child of Mr. Rakesh". How is Rohit related to girl?

Pointing to a man, a lady said, "he is the son of my husbamd's daughter". How is the man related to this lady?

A lady meets a person in the market who is the wife of the brother of her husband. How is the lady related to the person?

D said, "A's father is the only brother of my sister' son." How is A's father related to D?

If 'A x D' means 'A is the sister of D', 'A + D' means 'D is the daughter of A' and 'A ÷ d' means 'A is the mother of D', then how will 'N is the aunt of M' be denoted?