If X + Y means X is the uncle of Y, X - Y means X is the aunt of Y, and X ÷ Y means X is the brother of Y, what is the relationship of Z if X + Y ÷ Z?

B. Z IS Y'S BROTHER

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

D. SISTER

X is the daughter of Y. Y is the son of Z. How is X related to Z?

A. GRANDDAUGHTER

If A ÷ B means A is the daughter of B, A + B means A is the brother of B, and A - B means A is the sister of B, what is the relationship of C if A ÷ B + C?

A. C IS A'S BROTHER

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

A. SISTER