Venn Diagrams – Set Operations

MathematicsSets, Logic & Graph TheoryAges 15–16

Two or three sets A, B, C are drawn as a Venn diagram inside the universal set U = {1; 2; …; N}, with every element placed in its exact region. Click an operation button (union, intersection, difference, complement) or click a region directly to shade it; the resulting element list and count n(·) update instantly, together with the formula n(A ∪ B) = n(A) + n(B) − n(A ∩ B).