If $P + Q$ means $P$ is the husband of $Q$,$P - Q$ means $P$ is the sister of $Q$,and $P \times Q$ means $P$ is the son of $Q$,which of the following shows $A$ is the daughter of $B$?

Lakshmi and Meena were Rohan's wives. Shalini is Meena's step-daughter. How is Lakshmi related to Shalini?

There is a family of six persons $A, B, C, D, E$ and $F$. They are Lawyer,Doctor,Teacher,Salesman,Engineer and Accountant. There are two married couples in the family. $D$,the Salesman,is married to the Lady Teacher. The Doctor is married to the Lawyer. $F$,the Accountant,is the son of $B$ and brother of $E$. $C$,the Lawyer,is the daughter-in-law of $A$. $E$ is the unmarried Engineer. $A$ is the grandmother of $F$. Which of the following is one of the couples?

All the six members of a family $A, B, C, D, E$ and $F$ are travelling together. $B$ is the son of $C$ but $C$ is not the mother of $B$. $A$ and $C$ are a married couple. $E$ is the brother of $C$. $D$ is the daughter of $A$. $F$ is the brother of $B$.
How many children does $A$ have?

$A \div B$ means $A$ is the father of $B$,$A - B$ means $A$ is the wife of $B$,$A \times B$ means $A$ is the brother of $B$,$A + B$ means $A$ is the daughter of $B$.
If $P - R + Q$,which of the following statements is true?

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?