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Unilorin Post-UTME Mathematics 2018 (Model questions) Question 40

Question 40

Sets

In an examination taken by 40 students, 27 passed Mathematics, 18 passed Physics while 2 failed both Mathematics and Physics. How many students passed both subjects?

  1. A.3
  2. B.7
  3. C.5
  4. D.9
Show the answer and explanation

Answer: B (7)

Explanation

38 students passed at least one subject, so 27 + 18 − both = 38 and both = 7.