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

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

A. BROTHER

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

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 ?

E. NONE OF THESE

Pointing to a photograph, Vipul said, "She is the daughter of my grandfather's only son." How is Vipul related to the girl in the photograph ?

B. BROTHER