Mathematics, 05.08.2019 20:20, markell42

Of the 80 students in class, 25 are studying german, 15 french and 13 spanish. 3 are studying german and french; 4 are studying french and spanish; 2 are studying german and spanish; and none is studying all 3 languages at the same time. how many students are not studying any of the three languages?

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Of the 80 students in class, 25 are studying german, 15 french and 13 spanish. 3 are studying german...