P is the brother of D. X is the sister of P. A is the brother of F. F is the daughter of D. M is the father of X.
Who is the uncle of A ?

B. P

A + B means A is the son 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 mother of B; and
A = B means A is the sister of B.
What does P x R ÷ Q mean ?

C. P IS THE UNCLE OF Q.

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 father of Q ?

A. R

Pointing to a lady, a man said, "The son of her only brother is the brother of my wife."
How is the lady related to the man ?

D. SISTER OF FATHER-IN-LAW

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 - R x Q, which of the following is true ?

C. P IS THE SISTER-IN-LAW OF Q