If A is the brother of B and B is the sister of C, what is the relationship of C to A?

D. SIBLING

If P ÷ Q means P is the father of Q, and Q - R means Q is the sister of R, what is the relationship between P and R?

A. FATHER

If X × Y means X is the uncle of Y, X + Y means X is the aunt of Y, and X - Y means X is the brother of Y, what is the relationship of Z if X × Z - Y?

D. Z IS THE BROTHER OF Y

If K is the sister of L and L is the father of M, how is K related to M?

A. AUNT

If K is the grandmother of L, and L is the son of M, what is the relationship of M to K?

C. DAUGHTER-IN-LAW