Five friends P, Q, R, S, and T are sitting in a row. Q is sitting to the left of R but not next to S. T is sitting at one of the ends. Who is sitting in the middle?
Five people: X, Y, Z, W, and V, are from different cities: New York, Los Angeles, Chicago, Houston, and Miami. X is from neither New York nor Los Angeles. Y is from Chicago. Z is from Miami. What city is W from?
A family consists of a father, a mother, and two children. The father is a chef, the mother is a nurse, and one child is a student. If the other child is not a student, what can be inferred about their profession?