Question 1
5 tasks (A, B, C, D, E) are to be completed one after the other. The following conditions must be met:
- Task E must be performed immediately after Task D.
- Task B must be completed before Task A.
- Task C is neither the first nor the last task to be completed.
- Task A is performed exactly 3 positions after Task B.
Which task is scheduled in the third position?
Step-by-step solution (Deductive Logic):
1. Apply Consecutive Constraint: 'E immediately after D' -> (D, E)
2. Apply Before Constraint: 'B before A'
3. Apply Exclusion Constraint: 'C not first or last'
4. Apply Gap Constraints: 'A is 3 after B'
Final Sequence: A → B → C → D → E
Answer: The task in the third position is C.
Key Strategy: Use fixed pairs and gap constraints to anchor positions.
1. Apply Consecutive Constraint: 'E immediately after D' -> (D, E)
2. Apply Before Constraint: 'B before A'
3. Apply Exclusion Constraint: 'C not first or last'
4. Apply Gap Constraints: 'A is 3 after B'
Final Sequence: A → B → C → D → E
Answer: The task in the third position is C.
Key Strategy: Use fixed pairs and gap constraints to anchor positions.