M is the grandmother of N. O is the mother of N. How is O related to M?

A. DAUGHTER

H is the uncle of I. J is the sister of I. How is H related to J?

A. UNCLE

If P - Q means P is the mother of Q, Q + R means Q is the sister of R, and R * S means R is the father of S, what is the relationship of P to S?

A. GRANDMOTHER

If M × N means M is the son of N, N - O means N is the sister of O, and O + P means O is the father of P, what is the relationship of M to P?

A. COUSIN