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?
There are three boxes: one contains only apples, one contains only oranges, and one contains both apples and oranges. Each box is labeled incorrectly. You can pick one fruit from one box. Which box should you choose to correctly label all boxes?
Among four pets, a dog, a cat, a rabbit, and a turtle, the dog is heavier than the cat but lighter than the rabbit. The turtle is the lightest. Which pet is the heaviest?