In a group of five friends: Alice, Bob, Charlie, David, and Eva, the following conditions are given: 1) Alice cannot sit next to Bob. 2) Charlie must sit next to David. 3) Eva cannot sit at either end. Which of the following arrangements satisfies all the conditions?
In a family of six members A, B, C, D, E, and F, A is a doctor and the father of B. C is the mother of B and D. E is the sister of B and the daughter of C. F is the son of D. How is F related to A?
A class consists of six students: P, Q, R, S, T, and U. The following conditions apply: 1) P cannot be selected if Q is selected. 2) R must be selected if S is selected. 3) T can only be selected if U is not selected. Which of the following groups can be selected?
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?