If A * B means A is the father of B, A + B means A is the son of B, and A - B means A is the daughter 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 ÷ Q - R?
If A * B means A is the father of B, A + C means A is the brother of C, and C - D means C is the sister of D, what is the relationship of D to B if A * B + C - D means A is the father of B, A is the brother of C, and C is the sister of D?