Introduction to counting techniques

Specialist Mathematics · Unit 1 — Combinatorics, proof, vectors and matrices · Combinatorics

Learning objectives (3)

LO-1Use the addition principle.LO-2Use the inclusion-exclusion principle formulas to determine the number of elements in the union of two and the union of three sets. |A ∪ B| = |A| + |B| − |A ∩ B|] |A ∪ B ∪ C| = |A| + |B| + |C| − |A ∩ B| − |A ∩ C| − |B ∩ C| + |A ∩ B ∩ C|LO-3Use the multiplication principle.

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