In the following question, there are four alternative answers out of which one is correct. Find out the correct answer:

A, B, C, D, E and F are members of a club. There are two married couples in the group. A is the brother of D's husband. C is the president of All India Working Women's Association. F is a sitarist and is a bachelor. B's wife is not a member of the Club. Four of them belong to the same family. B and F are colleagues in the same organisation.

How is F related to B?

If B's mother is A's mother's daughter but A is not the female. How is A related to B?

In the following question, there are five alternative answers out of which one is correct. Find out the correct answer:

Introducing a woman, a man said, "Her mother's husband's sister is my aunt." How is the man related to the woman?

In the following question, there are five alternative answers out of which one is correct. Find out the correct answer.

Old man's son is my son's uncle, then what relation has the old man to me?

In the following questions, there are five alternative answers out of which one is correct. Find out the correct answer:

(1) '$S + K$' means '$S$ is the sister of $K$'.

(2) '$S - K$' means '$S$ is the father of $K$'.

(3) '$S \times K$' means '$S$ is the brother of $K$'.

Which of the following means '$P$ is the aunt of $D$'?

Leela, who is Sohan's daughter, says to Latika, "Your mother Alka is the younger sister of my father who is the third child of Gajanan." What is the relation of Gajanan to Latika?