Verify the distributive law of intersection over union: with A = 3, 4, 6, 7, 9, B = 4, 5, 8, 9, C = 3, 4, 5, 8, both A cap (B cup C) and (A cap B) cup (A cap C) equal:

  1. 4
  2. 3, 4, 5, 8
  3. 3, 4, 5, 6, 7, 8, 9
  4. 3, 4, 9
Answer

D) 3, 4, 9

Working out each side separately gives the same set 3, 4, 9, which verifies A cap (B cup C) = (A cap B) cup (A cap C). SLO M-09-A-13 · Application

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