If P is the father of Q, and Q is the son of R, what is the relationship of R to P?

B. WIFE

D is the daughter of E and F is the son of E. How is F related to D?

A. BROTHER

In a coded relation, A × B means A is the daughter of B, A + B means A is the son of B, and A - B means A is the cousin of B. What is the relationship of C if A × C + B?

A. C IS THE MOTHER OF A

If X × Y means X is the father of Y, Y - Z means Y is the sister of Z, and Z + W means Z is the brother of W, what is the relationship of X to W in X × Y - Z + W?

B. X IS W'S FATHER

A is the brother of B. C is the sister of A. How is C related to B?

A. SISTER