If X is the daughter of Y and Y is the sister of Z, what is the relationship of X to Z?

A. NIECE

P is the uncle of Q. Q is the daughter of R. R is the sister of P. How is Q related to P?

A. NIECE

If A is the mother of B and B is the sister of C, what is A's relationship to C?

B. MOTHER

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 + B × C?

C. C IS A'S SON

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