A + B means A is the father of B ;
A - B means A is the wife of B ;
A x B means A is the brother of B ;
A ÷ B means A is the daughter of B.

If P x R ÷ Q, which of the following statements is true ?

D. P IS THE SON OF Q

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 P x Q - S, which of the following is true ?

B. S IS FATHER OF P

A + B means A is the daughter of B ;
A - B means A is the husband of B ;
A x B means A is the brother of B.

If P x Q + R, which of the following is true ?

C. P IS THE SON OF R

If X + Y means X is the daughter of Y, X - Y means X is the son of Y, and X × Y means X is the uncle of Y, what is the relation of Z if X + Y - Z?

B. Z IS X'S FATHER

If A + B means A is the brother of B, A - B means A is the sister of B, and A × B means A is the father of B, what is the relationship of C if A + B × C?

D. C IS A'S SON