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. 3) Blue cannot be at either end. Which arrangement is valid?
A selection of fruits consists of: Apple, Banana, Cherry, Date, and Elderberry. The following conditions apply: 1) Apple cannot be selected if Banana is selected. 2) Cherry must be selected if Date is selected. 3) Elderberry cannot be selected if Apple is selected. Which selection is valid?
In a team of six players: A, B, C, D, E, and F, the following conditions are given: 1) A cannot play if B plays. 2) C must play if D plays. 3) E cannot play if F plays. Which of the following teams can be formed?
Five friends A, B, C, D, and E are sitting in a row. A is to the left of B but to the right of C. D is sitting at one of the ends. E is sitting to the right of D. What is the correct order from left to right?