6th Grade Principle of Inclusion and Exclusion: Problem 4

2 years ago
3

Problem: One hundred students were asked their opinion on three ice cream flavors. 65 said they liked strawberry, 75 said they liked chocolate, and 85 said they liked vanilla. What is the smallest number of students that could have said they liked all three flavors?

Key: Create a venn diagram. Which region was counted three times?

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