out of 300 students taking discrete mathematics 60 take coffee 27 take cocoa 36 take tea 17 take tea only 47 take chocolate only 7 take chocolate and cocoa ,3 take chocolate tea and cocoa,20 take cocoa only 2 take tea coffee and chocolate 30 take coffee only 9 take tea and chocolate whereas 12 take tea and coffee. Express the information om a venn diagram

An ammonia compressor has a 5% clearance volume and displacement rate of 80 l/s and pumps against a condensing temperature of 40°c. for two different temperatures of -10°c and 10°c, compute the mass flow rate of refrigerant assuming the clearance volumetric efficiency applies. discharge specific volume corresponding to-10°c and 10°c are 112.5 l/kg and 95 l/kg, respectively.