In a town survey of 46 people, 21 speak Urdu at home, 23 speak Punjabi at home and 11 speak both. How many people speak Urdu only (not Punjabi)?

  1. 33
  2. 10
  3. 13
  4. 22
Answer

B) 10

At least one = 21 + 23 - 11 = 33; first group only = 10; second group only = 12; exactly one = 22; neither = 46 - 33 = 13. So the answer is 10. SLO M-09-A-14 · Application

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