A man and his wife have three sons, and every of the sons has a sister. How many are there in the family ?

C. 6

P is the brother of Q and R. S is R's mother. T is P's father.
Which of the following statements cannot be definitely true ?

E. Q IS T'S SON.

E is the son of A.
D is the son of B.
E is married to C.
C is B's daughter.
How is D related to E ?

D. BROTHER-IN-LAW

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. Who is the husband of P ?

C. Q

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 A related to D ?

A. COUSIN