P is the uncle of Q. Q has a brother R. S is the sister of P. How is S related to R?

A. AUNT

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?

A. C IS A'S SISTER

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

If D is the mother of E and E is the daughter of F, how is D related to F?

B. WIFE

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

A. BROTHER