Mathematics, 03.06.2020 20:04 PanjiUR9220

In a group of 30 people, 18 drink tea, 14 drink coffee and 5 drink both tea and coffee. the number of persons who drink neither tea nor coffee is:

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In a group of 30 people, 18 drink tea, 14 drink coffee and 5 drink both tea and coffee. the number o...