If M is the grandmother of N and O is the father of N, what is O to M?

A. SON

If J is the uncle of K and K is the daughter of L, what is the relationship of L to J?

C. BROTHER-IN-LAW

In a coded relation, if P ÷ Q means P is the father of Q, P - Q means P is the daughter of Q, and P + Q means P is the son of Q, what is the relationship of R if P ÷ Q + R?

C. R IS Q'S SON

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 M + N means M is the sister of N, and N * O means N is the mother of O, what is the relationship between M and O?

A. AUNT