In a survey of 200 families: 90 read Jang, 80 read Dawn, 70 read Express; 30 read Jang and Dawn, 25 read Dawn and Express, 20 read Jang and Express, and 10 read all three. How many read only Jang?

  1. 80
  2. 50
  3. 40
  4. 60
Answer

B) 50

Only Jang = 90 - 30 - 20 + 10 = 50 (the triple overlap was subtracted twice, so add it back once). SLO M-09-A-14 · Application

Mathematics MCQ · More Sets and Functions MCQs · Practise