If A - B means A is the father of B, A + B means A is the daughter of B, and A ÷ B means A is the son of B, what is the relationship of C if A - B ÷ C?
If A + B means A is the brother of B, A - B means A is the sister of B, and A × B means A is the father of B, what is the relationship of C if A + C × B?
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 - R + Q?
In a coded relationship, if M ÷ N means M is the daughter of N, M + N means M is the son of N, and M × N means M is the wife of N, what is the relationship of O if M ÷ O + N?