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In a set of tasks A, B, C, D, and E, if A must be done before B and C, and C mus

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Question: In a set of tasks A, B, C, D, and E, if A must be done before B and C, and C must be done before D, which of the following is a possible order?

Options:

  1. B, A, C, D, E
  2. A, C, B, D, E
  3. C, A, B, D, E
  4. A, B, D, C, E

Correct Answer: A, C, B, D, E

Solution: 

The order A, C, B, D, E satisfies the constraints that A is before B and C, and C is before D.

In a set of tasks A, B, C, D, and E, if A must be done before B and C, and C mus

Practice Questions

Q1
In a set of tasks A, B, C, D, and E, if A must be done before B and C, and C must be done before D, which of the following is a possible order?
  1. B, A, C, D, E
  2. A, C, B, D, E
  3. C, A, B, D, E
  4. A, B, D, C, E

Questions & Step-by-Step Solutions

In a set of tasks A, B, C, D, and E, if A must be done before B and C, and C must be done before D, which of the following is a possible order?
  • Step 1: Identify the tasks: A, B, C, D, E.
  • Step 2: Understand the constraints: A must be done before B and C, and C must be done before D.
  • Step 3: Start with task A since it must be done first.
  • Step 4: After A, task C can be done next because it must come after A.
  • Step 5: After C, task D can be done because it must come after C.
  • Step 6: Task B can be done after A, so it can be placed after C.
  • Step 7: Finally, task E can be done at any time since it has no constraints.
  • Step 8: One possible order is A, C, B, D, E, which satisfies all constraints.
  • Task Ordering – Understanding the sequence in which tasks must be completed based on given constraints.
  • Dependency Management – Identifying dependencies between tasks to determine valid execution order.
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