n(A) = 25, n(B) = 18 and n(A cap B) = 7. Find n(A cup B).

  1. 43
  2. 18
  3. 36
  4. 50
Answer

C) 36

n(A cup B) = n(A) + n(B) - n(A cap B) = 25 + 18 - 7 = 36. SLO M-09-A-12 · Understanding

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