medium · GMAT Quant
In a corporate department of 80 employees, every employee is assigned to at least one of three committees: Planning, Budget, or Marketing. There are 40 employees on Planning, 35 on Budget, and 30 on Marketing.
If exactly 15 employees serve on exactly two committees, how many employees serve on all three committees?
- 5
- 10
- 15
- 25
- 0
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