This site presents the “Odd Ball Problem” of Example 2 in the text.
http://www.cut-the-knot.com/blue/OddCoinProblems.shtml
This site presents an extension of the “Prisoner Problem” of Example 5 in the text.
https://answers.yahoo.com/question/index?qid=1006022108240
If you want to see this extended problem as a YouTube video, here is the link:
https://www.youtube.com/watch?v=N5vJSNXPEwA
Here are some fun logic problems, along with their solutions.
http://www.austincc.edu/rgrmth/logic.htm