VISITING THE TOWNS.
(
Unicursal and Route Problems)
A traveller, starting from town No. 1, wishes to visit every one of the
towns once, and once only, going only by roads indicated by straight
lines. How many different routes are there from which he can select? Of
course, he must end his journey at No. 1, from which he started, and
must take no notice of cross roads, but go straight from town to town.
This is an absurdly easy puzzle, if you go the right way to work.
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THE FIFTEEN TURNINGS.
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THE TUBE INSPECTOR'S PUZZLE.
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