Engineering Board Exam Reviewer · Venn Diagrams · medium

Of 200 members, 120 attended meeting A and 90 attended meeting B. What is the least possible number who attended both?

  1. 10
  2. 90
  3. 30
  4. 0

Answer

A. 10

Solution

Both ≥120+90-200=10 (attained when every member attended at least one meeting).

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