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Upon examining the contents of 38 backpacks, it was found that 23 contained a black pen, 27
Contained a blue pen, and 21 contained a pencil, 15 contained both a black pen and a blue pen, 12
Contained both a black pen and a pencil, 18 contained both a blue pen and a pencil, and 10 contained
All three items. How many backpacks contained exactly one of the three writing instruments?
Bulimia
An eating disorder characterized by episodes of binge eating followed by behaviors to prevent weight gain, such as vomiting, fasting, or excessive exercise.
Major Depressive Disorder
A mental health disorder characterized by persistent feelings of sadness, hopelessness, and a lack of interest or pleasure in activities, significantly affecting daily functioning.
Weight Loss
The process or result of reducing total body mass, typically through diet, exercise, or a combination of both.
Over-Eating
Consuming food in quantities greater than the body's energy requirement, which can lead to weight gain and other health issues.
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