In a survey of 44 shoppers at a mall, 27 bought clothes, 18 bought shoes and 9 bought both. How many shoppers are in at least one of the two groups?

  1. 36
  2. 27
  3. 18
  4. 8
Answer

A) 36

At least one = 27 + 18 - 9 = 36; first group only = 18; second group only = 9; exactly one = 27; neither = 44 - 36 = 8. So the answer is 36. SLO M-09-A-14 · Application

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