Four friends, A, B, C, and D, have different pets: a dog, a cat, a bird, and a fish. A does not have the dog or the bird. B has a cat. C has a fish. Who has the dog?
Five people are standing in a line: Alex, Brian, Charlie, David, and Ethan. Alex is in front of Brian but behind Charlie. David is behind Ethan but in front of Brian. Who is in the middle of the line?
In a puzzle involving four colors: Red, Blue, Green, and Yellow, the following rules apply: 1) Red cannot be next to Blue. 2) Green must be next to Yellow. Which of the following color arrangements is valid?
In a puzzle, there are three boxes: A, B, and C. The following conditions apply: 1) Box A cannot contain item 1. 2) Box B must contain item 2 if box C contains item 3. 3) Box C can only contain item 1 or item 3. Which box must contain item 2?