Out of 43 patients, 22 have fever, 27 have a cough and 10 have both. How many patients have neither symptom?

  1. 12
  2. 4
  3. 29
  4. 39
Answer

B) 4

At least one = 22 + 27 - 10 = 39; first group only = 12; second group only = 17; exactly one = 29; neither = 43 - 39 = 4. So the answer is 4. SLO M-09-A-14 · Application

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