212 Unclassified Puzzlesagain. What is the lowest price it must cost him to join all the pieces together
so as to form an endless chain?A new chain will cost him 36¢. What is the cheapest method of procedure?
Remember that the large and small links must run alternately.- A SQUARE WITH FOUR PENNIES
Can you place four English pennies together so as to show a square? They
must all lie fiat on the table.- SIMPLE ADDITION
Can you show that four added to six will make eleven?- A CALENDAR PUZZLE
I have stated in my book Amusements in Mathematics that, under our
present calendar rules, the first day of a century can never fall on a Sunday or
a Wednesday or a Friday. As I have not given the proof, I am frequently asked
the reason why. I will try to explain the mystery in as simple a way as possible.
- THE FLY'S TOUR
I had a ribbon of paper, divided into squares on each side, as shown in the
illustration. I joined the two ends together to make a ring, which I threw on