$R$ is the daughter of $Q$. $M$ is the sister of $B$,who is the son of $Q$. How is $M$ related to $R$?

Pointing to the lady in the photograph,Mrinalini said,"Her son's father is the only son-in-law of my mother". How is Mrinalini related to the lady?

Pointing to a lady,Rajan said,"She is the daughter of the woman who is the mother of the husband of my mother." Who is the lady to Rajan?

$I. A, B, C, D, E$ and $F$ are six members of a family.
$II.$ One couple has parents and their children in the family.
$III. A$ is the son of $C$ and $E$ is the daughter of $A$.
$IV. D$ is the daughter of $F$ who is the mother of $E$.
What relationship do $D$ and $E$ bear to each other?

These questions are based on the following information. Study it carefully and answer the questions.
$(i)$ $A \times B$ means $A$ is father of $B$.
$(ii)$ $A \div B$ means $A$ is daughter of $B$.
$(iii)$ $A + B$ means $A$ is sister of $B$.
$(iv)$ $A - B$ means $A$ is husband of $B$.
In $F \div R \times H - L$,how is $H$ related to $F$?

$P \times Q$ means $P$ is the sister of $Q$; $P + Q$ means $P$ is the father of $Q$; $P - Q$ means $P$ is the mother of $Q$. Which of the following means $S$ is the aunt of $T$?