In a class students can take one or more out four subjects English, Math, Physics and Chemistry.110 take English, 100 take math,55 take physics and 130 take chemistry. Each student must take at least one subject.20 take only English, 10 take only math, 5 take only physics and 80 take only chemistry. The maximum possible number of students in the class is ___

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Solution

The correct answer is 255. Check the video for the approach.

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