Out of 34 patients, 12 have fever, 19 have a cough and 5 have both. How many patients are in exactly one of the two groups?

  1. 26
  2. 8
  3. 7
  4. 21
Answer

D) 21

At least one = 12 + 19 - 5 = 26; first group only = 7; second group only = 14; exactly one = 21; neither = 34 - 26 = 8. So the answer is 21. SLO M-09-A-14 · Application

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