A family consists of a father, a mother, and two children. The father is a doctor, the mother is a teacher, and the son is a student. What is the profession of the daughter if she is not a student?
Five students, A, B, C, D, and E, scored different marks in an exam. A scored more than B but less than C. D scored less than E but more than A. Who scored the highest marks?
A class of students consists of John, Sarah, Mike, and Lisa. The following conditions are given: 1) John cannot be in the same group as Sarah. 2) Mike must be in the same group as Lisa. Which of the following groups is valid?