Four friends - A, B, C, and D - have different pets: a dog, a cat, a bird, and a fish. A does not own a bird. B owns a cat. C does not own a dog. What pet does D own?
Five people - P, Q, R, S, and T - are sitting in a row. P is to the left of Q but to the right of R. S is sitting at one of the ends. T is not next to S. Who is sitting in the middle?
Four students - A, B, C, and D - scored different marks in an exam: 85, 90, 75, and 80. A scored more than B but less than C. D scored the lowest. Who scored 90 marks?
Four friends, A, B, C, and D, have different pets: a dog, a cat, a bird, and a fish. A does not have a dog or a fish. B has a cat. C does not have a bird. What pet does D have?