200 employees consume Espresso/Cappuccino/Latte. E∩L=25, E∩C=15, only Latte=35, Total E=95, All 3=30, Exactly 1=100. Find those who drink exactly 2.

Correct answer: 70

Solution

Only E=95-25-15-30=25. Only C=100-25-35=40. Total=200: 25+35+40+25+15+Only L∩C+30=200 → Only L∩C=30. Exactly 2=(E∩L)+(E∩C)+(L∩C)=25+15+30=70.

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