Explanation Given: The model is given by Theorem used: Euler’s Theorem: A graph can be traced if it is connected and has zero or two odd vertices. The only way the door can be placed in the Room B. Then only guard can enter by the door marked “Enter,” and pass through each door and lock it behind him, and then exit by the door that have placed in the Room B. Graph this model as shown below in Figure 1...

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ISBN: 9780134462356

Author: Pirnot

Publisher: PEARSON

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Chapter 4.1, Problem 50E

To determine

To place:

An exit door in one of the rooms A, B, or C so that the guard can enter by the door marked “Enter,” pass through each door and lock it behind him, and then exit by the door you’ve placed in the plan.

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Chapter 4.1, Problem 49E

Chapter 4.1, Problem 51E

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To place: An exit door in one of the rooms A, B, or C so that the guard can enter by the door marked “Enter,” pass through each door and lock it behind him, and then exit by the door you’ve placed in the plan.

Solution Summary: The author explains that an Exit can be placed in the Room B because it is the only possible place to locate the door.

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To place: An exit door in one of the rooms A, B, or C so that the guard can enter by the door marked “Enter,” pass through each door and lock it behind him, and then exit by the door you’ve placed in the plan.

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Chapter 4 Solutions

To place:

An exit door in one of the rooms A, B, or C so that the guard can enter by the door marked “Enter,” pass through each door and lock it behind him, and then exit by the door you’ve placed in the plan.