I Hate Venn Diagrams.
2,000 people take part in a survey to determine the preferences of the public in terms of pizza toppings. 632 say that they like pepperoni on their pizza, 339 like bacon, and 477 like sausage. 223 like both pepperoni and sausage, 112 like pepperoni and bacon, and 66 like bacon and sausage. If 22 like all 3 toppings, how many people do not like any of the toppings on their pizza?
The answer is 931.
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5 solutions
2 , 0 0 0 − ( 6 3 2 + 3 3 9 + 4 7 7 − 2 2 3 − 1 1 2 − 6 6 + 2 2 ) = 9 3 1 .