If X - Y means X is the sister of Y, X + Y means X is the brother of Y, and X × Y means X is the father of Y, what is the relationship of Z if X - Z + Y = true?
Five friends, A, B, C, D, and E, are sitting in a row. A is to the left of B but to the right of C. D is to the left of E. What is the correct order from left to right?
In a family of four members A, B, C, and D, A is a doctor, B is a teacher, C is a lawyer, and D is a student. If A is the father of C and B is the mother of D, who is the lawyer?