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In a scheduling scenario, if task X must be completed before task Y, and task Y

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Question: In a scheduling scenario, if task X must be completed before task Y, and task Y must be completed before task Z, which of the following is a valid inference?

Options:

  1. X can start after Y
  2. Z can start before Y
  3. Y can start after X
  4. Z must start after X

Correct Answer: Z must start after X

Solution: 

Z must start after X because X is a prerequisite for Y, which in turn is a prerequisite for Z.

In a scheduling scenario, if task X must be completed before task Y, and task Y

Practice Questions

Q1
In a scheduling scenario, if task X must be completed before task Y, and task Y must be completed before task Z, which of the following is a valid inference?
  1. X can start after Y
  2. Z can start before Y
  3. Y can start after X
  4. Z must start after X

Questions & Step-by-Step Solutions

In a scheduling scenario, if task X must be completed before task Y, and task Y must be completed before task Z, which of the following is a valid inference?
  • Step 1: Identify the tasks involved: Task X, Task Y, and Task Z.
  • Step 2: Understand the relationships: Task X must be completed before Task Y.
  • Step 3: Recognize that Task Y must be completed before Task Z.
  • Step 4: Conclude that Task X is a prerequisite for Task Y.
  • Step 5: Conclude that Task Y is a prerequisite for Task Z.
  • Step 6: Combine the information: Since Task X must be done before Task Y, and Task Y must be done before Task Z, Task Z cannot start until Task X is completed.
  • Task Dependency – Understanding the order in which tasks must be completed based on their prerequisites.
  • Transitive Relationships – Recognizing that if A must happen before B, and B before C, then A must happen before C.
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