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Puzzles and Humour

I like mathematical puzzles (and mathematical humour).

They provide intellectual challenges and mental stimulation. They also help the puzzler to learn and develop good problem-solving techniques. These techniques can sometimes be used when solving strategy problems in real life and can certainly be used in other mathematical pursuits. I have hundreds, and possibly thousands, of puzzles to share with you. This represents a small start!

I have decided to bundle them in groups of twenty:

CCM Puzzle Collection #001 ~ Puzzles 001-020

  • Three Switches and a Light
  • A Knockout Tennis Competition
  • Covering a Modified Chessboard With Dominoes
  • Completing a Tour of Towns
  • Packing Eight Numerals Into Eight Squares
  • Counting the Number of Pathways to a Given Place
  • A Matter of Symmetry
  • Which Shape is MOST Different?
  • Riding a Falling Ladder
  • Divide an Obtuse-Angled Triangle into Seven Acute-Angled Triangles
  • Divide a Square into Ten Acute-Angled Triangles


You are an excellent teacher … Would have been a different world for me had I had one like you … (born 49) left school in 9th grd. Still love math and don’t understand people who do not … You lay knowledge on a silver platter and it is much appreciated …

gregsphere (on a CCM YouTube video about How to Subtract [Large] Numbers Easily)

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