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Problem 1 . Below are some alternative ways to approach the activity - selection problem using a greedy strategy. For each one, state whether it

Problem 1.
Below are some alternative ways to approach the activity-selection problem using a greedy strategy.
For each one, state whether it yields an optimal solution and give a counterexample if it doesn't.
(a) Select the activity of least duration (from those that are compatible with already-selected
activities).
Solution:
(b) Select the activity with the latest start time that is compatible with all previously selected
activities.
Solution:
(c) Select the compatible remaining activity with the earliest start time.
Solution:
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