Pointing to a girl in the photograph,Amar said,"Her mother's brother is the only son of my mother's father." How is the girl's mother related to Amar?

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 $P$?

Study the following information carefully to answer these questions.
$(i)$ $P \times Q$ means $P$ is brother of $Q$.
$(ii)$ $P - Q$ means $P$ is sister of $Q$.
$(iii)$ $P + Q$ means $P$ is father of $Q$.
$(iv)$ $P \div Q$ means $P$ is mother of $Q$.
Which of the following represents $F$ is daughter of $W$?

Pointing to a photograph,Vipul said,"She is the daughter of my grandfather's only son." How is Vipul related to the girl in the photograph?

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?

$A + B$ means $A$ is the daughter of $B$; $A \times B$ means $A$ is the son of $B$; and $A - B$ means $A$ is the wife of $B$. If $Z \times T - S \times U + P$,what is $U$ to $Z$?