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Every student in High Mount High School is required to take at least one of the...

Every student in High Mount High School is required to take at least one of the 3 foreign lanuages: Spanish, German. and French. It’s known that 180, 172 and 122 students respectively take Spanish, German, and French; 46 students take both Spanish and German, 28 take both Spanish and French, 19 take both German and French; 7 students take all 3 languages. How many students are there in the school?

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