If P - Q means P is the sister of Q, and Q + R means Q is the brother of R, what is the relationship between P and R?

A. SISTER

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 daughter of Q, what is the relationship of R if P × R ÷ Q = true?

C. R IS THE SON OF Q

If X ÷ Y means X is the father of Y, X - Z means X is the sister of Z, and Y + Z means Y is the brother of Z, what is the relationship of Z to Y?

A. Z IS Y'S SISTER

If X ÷ Y means X is the father of Y, Y * Z means Y is the daughter of Z, and Z + W means Z is the brother of W, what is the relationship of X to W?

C. UNCLE

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 daughter of Y, what is the relationship of Z if X - Z + Y means X is the sister of Z and Z is the brother of Y?

A. Z IS X'S BROTHER