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

A. SISTER

If D is the daughter of E and F is the son of E, what is F to D?

A. BROTHER

If G is the uncle of H and H is the daughter of I, what is G to I?

B. BROTHER-IN-LAW

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

A. MOTHER

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

A. R IS P'S SON