Family Trees — Prelims Questions

In a family, A is B's father, B is C's mother, C is D's sister, and D is E's father. If F is E's wife, what is the relationship between A and F?

P's mother Q has two children. Q's husband R has a son S from his previous marriage. If S marries T and they have a daughter U, what is U's relationship to P?

In a joint family, there are exactly 3 married couples in the second generation. The first generation has 2 people, and the third generation has 8 people. If each married couple in the second generation has at least one child, what is the maximum number of people in the entire family?

A family tree shows that M has exactly 3 grandchildren. M's son N has 2 children, and M's daughter O has some children. If O has more children than N, how many children does O have?

In a family, X says 'Y is my father's only son's wife's sister.' If X is female, what is Y's relationship to X?