Mathematics, 12.11.2020 19:30 mikayla62

in a science class, 18 students read physics,25 read mathematics, 23 read chemistry, 9 read physics and chemistry, 10 read maths and chemistry, 6 read physics and chemistry. if there were 50 students altogether and 5 students did not read any of the three subject. how many children read all the three subject?

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