Recent content by Carl1

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    MHB What is the Pigeonhole Principle Problem in the African Rally?

    Very clearly explained. Thank you.
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    MHB What is the Pigeonhole Principle Problem in the African Rally?

    The following problem and solution (Problem 7 - African Rally) is presented in "the Art of Mathematics" by Bela Bollobas: Its solution is I am fine until I get to the sentence that starts ... and then I'm lost in trying to understand the use of the i and j indices. Any help...
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    MHB Can You Explain the Puzzle Toad Proof?

    Thank you so much. Now I understand the proof. It is beautiful.
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    MHB Can You Explain the Puzzle Toad Proof?