Mathematics, 27.09.2019 10:30 lol4373
In a survey of 200 students of a school, it was found that 120 study mathematics, 90 study physics and 70 study chemistry, 40 study mathematics and physics, 30 study physics and chemistry, 50 study chemistry and mathematics and 20 none of these subjects. find the number of students who study all the three subjects
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Hi, can anyone show me how to do this problem? 100 points for this. in advance
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In a survey of 200 students of a school, it was found that 120 study mathematics, 90 study physics a...
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