The best Venn diagrams John Venn never thought of - dofaq.co
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The best Venn diagrams John Venn never thought of

USA TODAY - 03 Aug 2014
Monday's Google Doodle reminds us that it's the 180th anniversary of the birth of John Venn, the English logician whose simple drawing of overlapping circles became a trademark tool of the social sciences. Yes, yes, Venn diagrams can teach math and ...

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