Five tasks, T1, T2, T3, T4, and T5, need to be completed. T1 must be done before T3 but after T2. T4 must be completed before T5. What is the correct order of tasks?
In a family, P is the father of Q, R is the mother of Q, and S is the sister of Q. If R is a lawyer and S is a student, what is P's profession if he is not a lawyer?
A, B, C, D, and E are five friends who are going to a party. A goes before B, C goes before D, and E goes after B. What is the correct order of arrival?