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BP889 Odd number of enclosed regions vs. even number of enclosed regions.
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COMMENTS

The use of numbers and pictures are only a distraction.


See BP966 for the version in which the background counts.

CROSSREFS

Adjacent-numbered pages:
BP884 BP885 BP886 BP887 BP888  *  BP890 BP891 BP892 BP893 BP894

KEYWORD

number

CONCEPT separated_regions (info | search),
even_odd (info | search)

AUTHOR

Thomas Joyce

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