If P + Q means P is the sister of Q, P - Q means P is the brother of Q, and P × Q means P is the mother of Q, what is the relationship of R if P + R - Q?
In a coded relation, A × B means A is the daughter of B, A + B means A is the son of B, and A - B means A is the cousin of B. What is the relationship of C if A × C + B?
If X + Y means X is the father of Y, X - Y means X is the daughter of Y, and X ÷ Y means X is the son of Y, what is the relationship of Z if X + Z ÷ Y?