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

A. NIECE

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?

A. Z IS X'S NEPHEW

If G is the uncle of H and H is the son of I, what is the relationship between G and I?

A. BROTHER AND SISTER

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

A. NIECE

If P is the uncle of Q, and Q is the daughter of R, what is the relationship of R to P?

C. BROTHER-IN-LAW