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There are 100 people at lunch. The fruits available for lunch are blueberries, raspberries, or blackberries.

59 people have blueberries, 37 have raspberries, and 53 have blackberries.

25 people have both blueberries and raspberries; 19 people have raspberries and blackberries; 21 people have blackberries and blueberries.

10 people have all three fruits.

How many people have no fruit at all?

 
 Nov 20, 2020

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