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

A. SISTER

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

A. SISTER

If D is the uncle of E and E is the daughter of F, what is F's relationship to D?

C. BROTHER-IN-LAW

M is the daughter of N. O is the brother of N. How is O related to M?

A. UNCLE

If K is the son of L and M is the sister of L, what is the relationship of M to K?

A. AUNT