There are three boxes: one contains only apples, one contains only oranges, and one contains both apples and oranges. Each box is labeled incorrectly. What is the minimum number of boxes you need to open to correctly label all the boxes?
There are four houses in a row: House 1, House 2, House 3, and House 4. The colors of the houses are Red, Blue, Green, and Yellow. House 1 is not Blue. House 2 is Green. House 3 is not Red. What color is House 4?
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?