Mathematics · Set Theory
In a school, a total of 180 students are enrolled in the foreign languages program. The foreign languages offered are: French, German, and Chinese, and the number of people studying each of these subjects is 80, 90, and 100 respectively. The number of students who study more than one of the three subjects is 50% more than the number of students who study all the three subjects. How many students study all three foreign languages?
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