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How many colours do you need to color a map so that two adjacent polygons aren't using the same colour?

  • 1.  How many colours do you need to color a map so that two adjacent polygons aren't using the same colour?

    Employee
    Posted 01-18-2018 10:10

    Read the "Why 19th-century mathematicians were obsessed with coloring maps" article to get a understanding of this mathematical challenge that started back in the 1850's and wasn't solved until 1976.

    http://geoawesomeness.com/why-19th-century-mathematicians-were-obsessed-with-coloring-maps