If A is the brother of B, and B is the sister of C, what is the relationship of A to C?

A. BROTHER

In a coded relation, if P - Q means P is the mother of Q, and Q + R means Q is the sister of R, what is the relationship of P to R in P - Q + R?

B. P IS R'S MOTHER

If D is the daughter of E and F is the son of E, what is the relationship of F to D?

A. BROTHER

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 = true?

A. C IS THE SISTER OF B

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

A. SISTER