X is the father of Y. Y has a sister Z. W is the son of Z. How is W related to X?

A. GRANDSON

In a coded relationship, if M ÷ N means M is the daughter of N, M + N means M is the son of N, and M × N means M is the wife of N, what is the relationship of O if M ÷ O + N?

A. O IS THE MOTHER OF M

If A + B means A is the sister of B, B - C means B is the brother of C, and C * D means C is the mother of D, what is the relationship of A to D?

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?

C. C IS THE DAUGHTER OF A

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

A. SISTER