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Mathematics, 09.06.2020 18:57 gwoodbyrne

In a group of students , 12 read maths, 15 read statistics , 11 read physics, 4 read maths only , 7 read statistics only, 3 read statistics and physics only and 1 read maths and statistics only . What is the number of the students who were there altogether ( universal set)

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In a group of students , 12 read maths, 15 read statistics , 11 read physics, 4 read maths only , 7...

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