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?

If $A + B$ means $A$ is the brother of $B$; $A \cdot B$ means $A$ is the father of $B$ and $A \times B$ means $A$ is the sister of $B$,which of the following means $M$ is the uncle of $P$?

$A$ is the son of $B$. $C$,$B$'s sister,has a son $D$ and a daughter $E$. $F$ is the maternal uncle of $D$. How is $E$ related to $F$?

Anil introduces Rohit as the son of the only brother of his father's wife. How is Rohit related to Anil?

Pointing to a lady,a man said,"The son of her only brother is the brother of my wife." How is the lady related to the man?

$A$ girl introduced a boy as the son of the daughter of the father of her uncle. The boy is the girl's: