In a survey of 50 newspaper readers, 40 read Champion and 30 read Guardian, how

MATHEMATICS
JAMB 2010

In a survey of 50 newspaper readers, 40 read Champion and 30 read Guardian, how many read both papers?

  • A. 10
  • B. 5
  • C. 15
  • D. 20

Correct Answer: D. 20



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