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Venn Diagrams

Venn Diagrams​

Two-set table:

Only A = A - A intersection B
Only B = B - A intersection B
Neither = Total - A union B

Three-set accuracy checklist:

  • Pairwise intersection values often include the triple intersection.
  • "Only A and B" excludes C.
  • "A and B" usually includes those also in C unless "only" is written.
  • "Exactly one" is not the same as "at least one".