n(A) = 50, n(B) = 38 and n(A cup B) = 70. Find n(A cap B).

  1. 32
  2. 20
  3. 88
  4. 18
Answer

D) 18

n(A cap B) = n(A) + n(B) - n(A cup B) = 50 + 38 - 70 = 18. SLO M-09-A-12 · Understanding

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