A family consists of six members P, Q, R, X, Y and Z. Q is the son of R but R is not mother of Q. P and R are a married couple. Y is the brother of R. X is the daughter of P. Z is the brother of P. Who is the brother-in-law of R ?

B. Z

A party consists of grandmother, father, mother, four sons and their wives and one son and two daughters to each of the sons.
How many females are there is all ?

A. 14

A family consists of six members P, Q, R, X, Y and Z. Q is the son of R but R is not mother of Q. P and R are a married couple. Y is the brother of R. X is the daughter of P. Z is the brother of P. How many female members are there in the family ?

B. TWO

If X is the brother of the son of Y`s son, how is X related to Y ?

D. GRANDSON

A + B means A is the daughter of B ;
A x B means A is the son of B  and
A - B means A is the wife of B.

If Z x T - S x U + P, what is U to Z.

B. GRANDMOTHER