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

A. DAUGHTER

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

In a coded relation, 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 grandfather of N, what is the relationship of O if M + O - N?

A. O IS THE SON OF N

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

C. C IS THE DAUGHTER OF A

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

A. AUNT