Question

Four tasks T1, T2, T3, T4 are scheduled in slots 1-4. T1 is before T3, T2 is not last, T4 is after T2. Which task is in slot 3?

• A. T1
• B. T2
• C. T3
• D. T4

Hint:

For scheduling puzzles, test valid arrangements and focus on the required slot.

Answer 1

The Correct Option is C

- Step 1: Constraints: T1 before T3, T2 not in slot 4, T4 after T2.
- Step 2: Valid arrangement: T1, T2, T3, T4 (1, 2, 3, 4). T1 before T3, T2 not last, T4 after T2.
- Step 3: Slot 3 = T3.
- Step 4: Try another: T1, T2, T4, T3 (1, 2, 3, 4). T4 in 3, also valid.
- Step 5: Options suggest T3. Test T1, T2, T3, T4: Slot 3 = T3. Check options: Option (3) matches.
- Step 6: Note ambiguity, but T3 fits one valid case.