It is a remarkable fact that one can look through a dozen text books on metallurgy and not find a definition of the word steel. Some of them describe the properties of many other irons and then allow you to guess that everything else is steel. ... Read more of Composition And Properties Of Steel at Steel Making.caInformational Site Network Informational
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THE MOTOR-CAR TOUR.





(Unicursal and Route Problems)
In the above diagram the circles represent towns and the lines good
roads. In just how many different ways can a motorist, starting from
London (marked with an L), make a tour of all these towns, visiting
every town once, and only once, on a tour, and always coming back to
London on the last ride? The exact reverse of any route is not counted
as different.


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Next: THE LEVEL PUZZLE.

Previous: A BANK HOLIDAY PUZZLE.



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