If 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 wife of B, what is the relationship of C if A × C + B = true?

B. C IS THE SON OF B

A is the brother of B. C is the sister of A. How is C related to B?

A. SISTER

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 son of Q, what is the relationship of R if P × R ÷ Q?

A. R IS THE DAUGHTER OF Q

If M is the brother of N and N is the sister of O, what is O's relationship to M?

D. SIBLING

A is the grandmother of B. C is the daughter of B. How is A related to C?

B. GRANDMOTHER