N a science class, 18 read physics, 25 read mathematics 23 read chemistry, 9 read physics and mathematics, 10 read mathematics and chemistry 6 read physics and chemistry. If there were 50 students all together and 5 students did not read any of the three subject, then how many students read All the three subject then how many students read mathematics only and how many students read chemistry but not mathematics and how many students read physics and chemistry but not mathematics