Mathematics, 05.10.2019 20:30 thedocgalloway
Asurvey of 100 students was taken concerning their knowledge of foreign languages. the results were as follows: 30 know french19 know german16 know russian11 know both french and russian12 know both french and german6 know both german and russian4 know all three languages how many students do not know any of the three languages?
Answers: 2
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