Engineering Board Exam Reviewer · Venn Diagrams · medium
In a survey of 150 people, 90 read magazine A, 70 read magazine B, and 30 read both. How many read neither?
- 20
- 30
- 40
- 10
Answer
A. 20
Solution
Read at least one =90+70-30=130. Neither =150-130=20.
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