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 × D?
In a coded relationship, if A + B means A is the uncle of B, A - C means A is the aunt of C, and B × C means B is the child of C, what is the relationship of D if A + D - C × B?
If M × N means M is the sister of N, M + O means M is the mother of O, and N ÷ O means N is the father of O, what is the relationship of P if M × P + N ÷ O?