A family consists of six members P, Q, R, S, T and U. There are two married couples. Q is a doctor and the father of T. U is grandfather of R and is a contractor. S is grandmother of T and is a housewife. There is one doctor, one contractor, one nurse, one housewife and two students in the family. Which of the following is definitely a group of male members ?

A. QU

If P + Q means P is the husband of Q ;
P / Q menas P is the sister of Q  and
P x Q means P is the son of Q,
which of the following shows A is the daughter of B ?

D. A / D X B

X introduces Y saying, "He is the husband of the grand daughter of the father of my father."
How is Y related to X ?

C. BROTHER-IN-LAW

A girl introduced a boy as the son of the daughter of the father of her uncle. The boy is girl`s

A. BROTHER

A is the son of B.
C, B`s sister has a son D and a daughter E.
F is the maternal uncle of D.

How is E related to F ?

C. NIECE