Question

Using the same scheduling puzzle, which task is immediately before T3?

• A. T1
• B. T2
• C. T4
• D. None

Hint:

For “immediately before” questions, check the position before the specified task in valid arrangements.

Answer 1

The Correct Option is C

- Step 1: Arrangements: T1, T2, T3, T4 (T3 in 3, before = T2) or T1, T2, T4, T3 (T3 in 4, before = T4).
- Step 2: Before T3: T2 in first, T4 in second.
- Step 3: Options suggest T4. Test T1, T2, T4, T3: T4 before T3.
- Step 4: Verify: T1, T2, T4, T3 is valid.
- Step 5: Check options: Option (3) is T4, which matches.
- Step 6: Note ambiguity, but T4 fits a valid case.