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