If P × Q means P is the father of Q, P - Q means P is the son of Q, and P + Q means P is the daughter of Q, what is the relationship of R if P × R + Q = true?
In a coded relation, if M + N means M is the uncle of N, M - N means M is the aunt of N, and M × N means M is the cousin of N, what is the relationship of O if M + N × O?
In a coded relation, if P - Q means P is the mother of Q, P + Q means P is the father of Q, and P ÷ Q means P is the sister of Q, what is the relationship of R if P - R + Q?